I think his car is a GT, from looking at his sig.

I've run my GTP up to over 150, once, on I-4 at about 4:30am with a completely deserted highway on the way to the Orlando Car show.
Oddly enough, it smoothed out after about 120, but still took it quite some time to get that other 30mph.

I just wanted to see how fast it'd go, didnt take a vid in the car, cause thats damn stupid going that fast.

Had a friend rid in the outside lane with a camera going, he has his cruise set at 85mph.

YouTube - MachineGunSquid High Speed Run 50 - 150 MPH He posted my mods in the beginning