Nissan has broken new ground with the Leaf, which is the company's first all-electric subcompact. Unlike the Tesla roadster, this electric car has room for five, and it's being built on a much more massive scale--20,000 are planned to be built in 2011, with 50,000 available in 2012. With a reported MSRP of $33,600, it's much more affordable than the nearest competitor, the Chevrolet Volt, which stickers at over $41,000.