5. Koenigsegg CCX
The Koenigsegg CCX or Competition Coupe X is an upgraded version of the ever successful models of CC and CCR. It is designed by Koenigsegg Automotive AB. The specifications of this super automobile are 32-valve DOHC V8 engine with 4700 cc displacement, the maximum speed of 245 mph and 806 horsepower. All these characteristics make it an extreme car.