13. Chevrolet Corvette Z06

Via aftereight-ks.com

This luxurious supercar is powered by a gargantuan 6.2 liter engine that produces an astonishing 650 horsepower and 650 lb-ft of torque at 3,600 rpm, making it the most powerful car ever produced by General Motors. This also makes it one of the most powerful cars in the US. The car also comes in coupe and convertible models, the first ever since the Corvette’s primary production in 1963. Its chief engineer said, “Simply put, until recently it was not possible to create an open-roof structure strong enough to meet Corvette’s highest performance levels. It required advancements in computer-aided engineering, metallurgy and manufacturing.”