GM's eAssist: 25% improvement?

In a recent blog post, GM claims that their eAssist mild hybrid (starter/generator) system is good for an average 25% fuel economy improvement.

I'm not sure how they got this number, it doesn't pass the common sense test for me.

Here are the EPA ratings for the eAssist Malibu vs the 2.5L I4 gasoline Malibu, copied from the EPA's FuelEconomy.gov web site:

2014 Malibu eAssist

City: 25mpg

Highway: 36mpg
Combined: 29mpg

2014 Malibu 2.0L

City: 21mpg

Highway: 30mpg
Combined: 24mpg

So, comparing Malibu vs Malibu, by getting the eAssist system, you gain all of 5mpg for the EPA combined number, which is a 20% improvement, not 25%.

And these are EPA numbers! In real life, where people will drive faster than the EPA does, the benefit of eAssist will drop further.

Introducing Android 4.3, a sweeter Jelly Bean

Today we�re releasing Android 4.3 � an upgrade to Jelly Bean that introduces a number of new features, including restricted profiles. Android 4.3 also adds Bluetooth Smart support (a.k.a Bluetooth Low-Energy); the latest in 3D graphics through OpenGL ES 3.0; and more.

Restricted profiles for tablets
Lightweight and portable, tablets are perfect for sharing with others. Last October we added support for multiple users. Each person has a separate space and can freely customize the tablet experience, from lockscreen to wallpaper, apps and folders.

In Android 4.3, we're introducing restricted profiles, which let you manage per-user access to apps and content. Restricted profiles can be used in any number of situations. For example, restricted profiles enable parental controls, so certain family members are prevented from accessing mature content. Alternately, retail stores can use tablets as kiosks that show product information, or shops can use tablets as point of sale systems, all while limiting access to apps.

To set up restricted profiles on your tablet, go to the Users section under Settings. Learn more.

Bluetooth Smart support (a.k.a. Bluetooth Low-Energy)
Fitness sensors and other devices that use Bluetooth Smart technology open the door for a whole new class of mobile applications. Bluetooth Smart minimizes power usage while measuring and transmitting data, making both sensors and the phones or tablets connected to them more battery-efficient.

With Android 4.3, Nexus 4 can now connect to Bluetooth Smart sensors. Runtastic and many other developers are making Android apps compatible with these sensors.

Accelerated 3D graphics with OpenGL ES 3.0
Devices like the new Nexus 7 support OpenGL ES 3.0, the latest industry standard for accelerated 3D graphics. This brings photorealism to a whole new level in the games you're playing: blades of grass on the soccer field come alive, asphalt on the street looks real as you screech by, stubble on a villains' face almost pokes out of the screen. And with sophisticated effects like self-shadows, that villain looks even more menacing, casting a shadow on himself.

Dial pad autocomplete
With Android 4.3 we�ve introduced a new autocomplete feature in the dial pad. Just start touching numbers or letters and the dial pad will suggest phone numbers or names. To turn on this feature, open your phone app settings and enable �Dial pad autocomplete�.

Improved support for Hebrew, Arabic, Hindi, and more

We�ve made major progress on enabling right-to-left layouts across the platform user interface: dialer, home and lock screens, settings, and more. This work builds on the support that we introduced for right-to-left layouts for Hebrew and Arabic speakers in Android 4.2. We�ve also added support for Hindi, Afrikaans, Amharic, Swahili, and Zulu.

There�s more to Android 4.3 than we can fit in this post, so for a detailed list of changes, click here.

Android 4.3 is now rolling out now to Nexus devices, and will be available on the new Nexus 7 and Google Play edition devices soon. Let us know what you think on our Google+ page for Android.

Posted by Dave Burke and Gabe Cohen, Android Platform team

From TVs to tablets: Everything you love, across all your screens

When I was growing up, my family had a single screen we huddled around every day: the television set in the living room. Nowadays, we �huddle� around multiple screens�laptops, smartphones and tablets�using them almost interchangeably as we navigate through our day. In a world of ubiquitous computing, life would be a lot simpler if we didn�t have to learn new behaviors and interfaces each time we switched screens�if we could have one consistent, intuitive experience no matter where we are or what we�re doing. Today, with the launch of Chromecast and the new Nexus 7 tablet, it�s even more effortless to enjoy content you care about�whether it�s video, music, movies, games�wherever you are, across your devices. Introducing ChromecastTo help make it easy to bring your favorite online entertainment to the biggest screen in your house�the TV�we�re introducing Chromecast. Chromecast is a small and affordable ($35) device that you simply plug in to your high-definition (HD) TV and it allows you to use your phone, tablet or laptop to "cast" online content to your TV screen. It works with Netflix, YouTube, Google Play Movies & TV, and Google Play Music, with more apps like Pandora coming soon. With Chromecast, we wanted to create an easy solution that works for everyone, for every TV in the house.

 

Remote-freeOnce your Chromecast is set up, you can use your phone, tablet or laptop to browse and cast content to your TV, play and pause, control the volume, and more. But unlike other streaming solutions, you can still multitask�send emails or surf the web�while enjoying what�s on the TV screen. It works across platforms�Android tablets and smartphones, iPhones, iPads, Chrome for Mac and Windows (more to come), so your personal device is also now your remote control. Cast the web to your TVIn addition to apps like Netflix, you can use Chromecast to bring a broad range of content available on the web to your big screen, thanks to a new feature in the Chrome browser that allows you to project any browser tab to your TV. From sharing your family photos to enjoying a video clip from your favorite news site, it�s as simple as pressing a button. This feature is launching in beta, but we�re excited for people to try it out and give us their feedback.

 
Google Cast SDK preview for developersTo ensure a great Chromecast experience over time, we've built Google Cast, a technology that enables developers to build consistent, intuitive multi-screen experiences across mobile devices and TVs. Today, we�re launching a preview version of Google Cast with more information for developers on our Google Developers blog. A handful of early developers are already working on enabling Google Cast technology in their apps, so more supported apps are coming soon. And while the Chromecast device is the first instantiation of Google Cast, we expect the technology to be embedded in a range of hardware from our partners in the future.

The new Nexus 7�the sharpest 7� tablet screen everTogether with ASUS, we took what you loved about the original Nexus 7 and made it even better. The first thing you�ll notice is the sharpness of the screen: the 323 pixels packed into every inch of the screen makes it the world's highest-resolution 7-inch tablet. It�s lighter than ever, with more than nine hours of HD video playback and 10 hours of web browsing or reading. Nexus 7 now features stereo speakers and virtual surround sound from Fraunhofer (the inventors of the MP3 format), giving you rich and immersive audio. Android 4.3�a sweeter Jelly BeanNexus 7 is the first device to ship with Android 4.3, the newest version of Android. Tablets are perfect for sharing with others, so in Android 4.3, we're introducing restricted profiles, which let you limit access to apps and content. For example, restricted profiles enable parental controls, so certain family members are prevented from accessing mature content. Likewise, retail stores can use tablets to show off product information, and shops can use tablets as point of sale systems. Android 4.3 also now supports Bluetooth Smart technology, opening the door to mobile apps that connect to new devices like fitness sensors. Android 4.3 is rolling out to Nexus devices starting today. Ready to PlayThe new Google Play Games app brings your friends together with the games you love, where you can invite a friend and start challenging gamers around the world, compete for top achievements, and race to the top of the leaderboard. You can also enjoy the world�s largest collection of eBooks, listen to millions of music tracks and immerse yourself in thousands of movies, TV shows, magazines and apps on Google Play. Plus, Nexus 7 comes loaded with your favorite Google apps, like Chrome, Maps, YouTube, Gmail and Google Now.

 
How to get Chromecast and the new Nexus 7Starting today, the Chromecast device is available for $35 on Google Play, Amazon.com and BestBuy.com. It will be available in Best Buy stores across the U.S. starting July 28. For a limited time, you also get three months of Netflix included. More info available in Google Play. Nexus 7 starts at $229, and is available in the U.S. beginning July 30 (with more countries coming soon!). Buy Nexus 7 online on Google Play, or check it out at Best Buy, Gamestop, Walmart, Staples, Office Max, Office Depot, Amazon, Home Shopping Network, Radio Shack, J&R and B&H Photo. Nexus 7 (LTE) is coming soon with support for T-Mobile and Verizon in the coming weeks. Learn more on our Nexus site.

Musk: Batteries Are Expensive

"The biggest single challenge for electric vehicles is affordability." -- Elon Musk

This comment was made during a recent shareholder's meeting, reported by Inside EVs.

Musk thinks Tesla can produce in "three to four years" an EV which has sufficient range to be broadly practical, which is affordable to a large number of customers.

Which is probably something like a $30,000 vehicle which has a real world range of 200miles or better. Based on the sales numbers of the current crop of 100mile vehicles, which aren't great, I am guessing the range needs to double before the masses really take notice.

But doubling the range of a car like the Leaf will add approx. $10,000 to its price, at current battery costs of approx $500/kWh.

So the billion dollar question is, how will Tesla get ~45kWh of batteries for $10,000, leaving them $20,000 for the base vehicle and profit?