The only other IT car I've seen gather more interest from passer bys is Jeff TR8. Generally the comments there are from folks who are astonished that a) they are actually seeing one b) it is
running c) it is racing
without long streaks of fluids, and d) it is winning
against actual other cars running at the end of the race.
One more picture of more development, finding the fundamental vibration modes of the driveshaft. Measurements were made with the driveshaft in the car and out on the bench using an acoustic transducer, A/D converter, and some analysis code Jeff G drafted up in MatLab.
Jeff G has his Ph.D. in acoustics, specially engineering vibration type work, and his daytime job is as an acoustical and vibrational engineer for John Deere. Jeff G is convinced his car has a bad vibration that we've tried to kill to no avail. He thinks the driveshaft is the culprit and that we can tune it out by properly balancing the driveshaft.
Me, I was just watching and drinking a beer. My car has a vibration that certainly gets to be pretty bad around 5400 RPM, about our max RPM for a variety of reasons. I think he's on to something and he's devised to tests to check the theory out. Ford had a 110 mph governor on the V6 cars and a numerically low rear end ratio so it is likely they would never see the drive shaft speeds we run and thus no problem would ever be observed.
http://www.gt40s.com/images/Mustang/hammer.JPG
http://www.gt40s.com/images/Mustang/signal.JPG