Ditch the airbags, ramp up the traction aids so they won't be able to break traction for a burnout or a slide, throttle by wire, gps speed limited to, say, 10 kph over the speed zones.
Unrestricted engine mods but the ecu, traction aids, throttle control nor the gps can be touched or moded in any way.
What a wonderful dreamland we live in.