10. Saleen S7
Top speed: 399 km/h
Tuning specialist Saleen built its first car from 2000-2004. The Saleen S7 had a 7.0-litre V8 engine that could reach 320 km/h. In 2005, with a twin-turbo unit delivering 1,000 horsepower, it was able to increase that number to 399 km/h.