4. 9ff GT9-R

The 9ff GT9-R can reach a speed of 257 mph, and go from 0 to 60 in 2.9 seconds, according to CBS Miami. One sure way to increase speed is to reduce weight. The GT9-R looks like a million bucks on the outside, but with all the amenities stripped from the interior you may be in for a bumpy ride.

Credit: 9ff.de