I had one that went to a score of 411. It happened in the around generation 20-25, IIRC.

I evolved motocross bikes, road racing bikes and baby strollers.

The large wheeled versions (MX/RR) all wanted to go to fast and eventually crashed/flipped. <-- hmmm,...

The strangest thing was the large front wheel/tiny rear wheel (with its high torque) configurations that all seemed to do so well. They were never the best but they were very reliably able to get to a score of 150-200.