Should make a distinction between hot rod or race cars and tanks. For tank operations, best would be to build an obstactle course through which to maneuver the tanks, ie; gullies, bridge, sharp turns as in city streets, built up objects to drive around and maybe some targets laced in to stop and engage. Tanks are not Mustangs or Maseratti's and should be run slow and deliberate, which should teach proper or realistic tank movements. If you want to run slalom or running to a finish line, get race cars.