While plenty of talk at the New York Auto Show is about gas mileage and electric cars there are actually more cars than ever packing hugh amounts of horsepower. The new SRT Viper (formerly Dodge) is a showstopper while the 620 horsepower Mercedes SL65 AMG redefines rare -- just 45 copies will be made. Then there's Ford's Mustang Shelby 500GT for the rest of us.
