17. Vector W8
The legendary Vector W8 is a wedge-shaped, V8 powered monster they presented in 1990. It was an ambitious project initiated by the Vector Aeromotive Corporation. Under the engine cover was a typical American powerhouse in the form of a Chevrolet small-block V8.

They paired it up with twin turbochargers to produce 625 HP, which was a mind-blowing figure. They only produced approximately 20 of these, so if you own one of these gems, you definitely have one of the most obscure American cars they ever built.