When it comes to badass cars there is no way not to mention the Corvettes. One very interesting fact is that in the C6 series they have not one but two beasts in the ranks. One of them is the Z06 and the second, which is crazier than the first one, ZR1.
The second series known as ZR1 has 6.2l V8 supercharger that produces 639 horsepower, which is nit bad at all for an American car. Through time, this car was one of the most powerful ones, at least when we talk about American cars that greenback could afford, and even though the Hellcat took that title when it came out, it is still considered legend.