One of those generated tracks happened to loop back to itself in the middle, now that is one way for the game to confuse itself.
The cars were placed in reverse order (me in front), bumper to bumper, so the others had to use reverse gear to break free of the pack (surprisingly, they managed that part like second nature).
There was no goal line, the road just ended, and all the Bob's started banging around at the invisible side walls, as if trying to get out.
Just for curiosity I drove all the way back past the starting line, to where the road attached back to itself, and suddenly found myself floating a few metres above ground, the road had just disappeared visibly, but I could still drive and hit some invisible walls.
I had to exit that test since it would never end itself.