2011 Chevy Volt, the electric car concept - the secret was revealed by mistake last week; several pictures of the concept car were accidentally posted for only 12 minutes on the internet.

"People buy environmentally friendly cars because they feel it's the right thing to do, not necessarily because of their looks or to make a fashion statement. But the Volt is different. It's something one would buy because it is so compelling to look at, and the fact that it has the potential to never burn any gasoline – that's just a bonus."