A new study says that batteries in the Nissan LEAF degrade faster in hot climates. The Congressional Budget Office says that federal subsidies for manufacturing and purchasing EVs will cost taxpayers around 7.5 billion dollars through 2019. Audi revealed the 2013 S3 which gets a walloping 300 horsepower from a 2.0-liter turbocharged engine. All that and more, plus a preview of Autoline This Week about whether using ethanol in gasoline hurts our food supply.