I don't remember the car, but I was at OCIR years ago when a nitro FC or TF blew either/both engine/clutch/trans and the flywheel took off straight up the air for several hundred feet. It was still spinning at some ungodly RPM when came back down, hit the track, and took off for the pits. I was always amazed that it didn't hit anybody/anything and go through them like a buzzsaw.