There's really no point in building a car that can go above 150km/h, but perhaps some of the aerodynamics can translate into more fuel efficient car.
I'm also slightly annoyed by the usage of the word "barrier". There's physical or perceived 300mph barrier. People have built cars that will go a super sonic speeds, so there was never any doubt that it would be possible. Admittedly it is a little funny that the Bugatti is faster than a Formula 1 car.