No – I haven’t any seat time for my self, but I did get to talk with an HPDE instructor that spent a weekend with a student that brought one to CMP. His reaction was that it was an amazing car. It was very powerful, but not in the neck wrenching style of a ZR1 Corvette.
Yes, it had to be released from the factory speed limitor prior to going on track and that allowed it to reach phenominal speeds at CMP. The owner was in the novice class an blew by everything else on the track. Unfortunately this is not a car that you should use to learn proper driving technique. It just has so much computerised assistance that you can make constant mistakes and still bow past every other car on the track.
The instructor described it as a car that you could drive as if the brake and accelerator were simply switches. Just slam on the brakes and turn and the computer sorts it out. Jam on the accelerator and the computer sorts it out. It doesn’t let you over power through a corner no matter how hard you press down. Unfortunately this allowed the student to drive off line and not develop a smooth driving style.
With so much automation the experienced instructors clucked dissaprovingly at the car, but they had to admit that in the hands of an experienced professional this car would lap far faster than an ordinary super car.
Here is an episode of Top Gear with the GTR: