Pro street had drifting? I can't remember offhand but I do remember drifting playing Grid. Drifting is really easy though, just gotta work the steering a lot, brakes and hand brake and it shouldn't be too much trouble to drift around a track and never lose the drift and build up insane scores. On a timed drift on grid online, i've drifted before for the entire 10 minute time or whatever it was, i can't remember, sometimes it was different.