I like the sliding robocar. If I want solid control I would go back to the 1/10 scale hobby level car. There are many available rubber compounds for the hobby car wheels. They have caster, toe-in, four wheel drive and weigh four pounds.

Sliding looks like dirt track racing. When I was a kid we had midget car racing with little four cylinder Offenhouser engines on a 1/4 mile dirt oval. I did not do it, but I sure did watch.

Ken