WATCH: Hennessey Venom F5 "faster than a F1 car"

Tell an American he can't build a car and he will build you something"faster than a F1 car".

Yes, Hennessey have unveiled what they say (still to be proven though) is officially the fastest car in the world capable of 484km/h! 0-300km/h in under 10 seconds and a sentence so extraordinary that we have to build up to it...