4. SSC Ultimate Aero and 9ff GT9-R
Since the cars we are talking are all about speed, there are two vehicles which can go as fast as 257 mph and they share the fourth spot on the list – the SSC Ultimate Aero and 9ff GT9-R.
The former comes with a V8 engine and the complete output of 1183 hp, whereas the starting price of this model is only $654,400, making it the cheapest vehicle among these top five street-legal beasts.
Meanwhile, the latter is equipped with a 4.0-liter I6 twin-turbo powerplant that can deliver 1120 hp. The price is similar to the SSC, and you can have this supercar for $695,000.