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Im fascinated by how every single wheel stays round..... ???? ?????ÿ
It all depends on what you put in the model.
Back in the dark ages when analog computation was still an engineering subject (it was actually better for some problems with moderate accuracy requirements than programming up digital computers) my roommate set up a demo for an open house.?ÿ He programmed a drag racer so that you could adjust the horsepower, gear ratio, and track friction.
The first time he ran it all worked fine, the rear tires spun, the front wheels raised up, and it ran down the track. The front wheels came down .... and dangled back and forth below the "track".?ÿ He had forgotten to program the ground level for the front wheels, which were calculated based only on the rear wheels position.
