We had a chance this morning to be one of the first to drive the GTbyCITROEN Concept on Gran Turismo 5: Prologue at the Paris Auto Show. The car, easily the hottest concept here at the show, was designed as a joint venture between Citroen and Polyphony Digital, the makers of Gran Turismo. We'll gladly admit we are not virtuosos of GT5, as we should be, but once we figured out what everything did, it was off to the races. By our uncalibrated estimates, the GTbyCITROEN has a tendency to understeer more than we expected, but it is fast, and it'll handle high speeds pretty well. Oh, and after we took a look inside the concept, we were interested to see that dash provides a sweet heads-up unit displaying current velocity. We totally need to get a PS3.