[Hugh R]

Drill and fill the back end 1/2 full with BBs as it goes down the ramp they slam forward and give it a kick. Don't let anyone else touch the car. Oh, you want to be legal? never mind.

Put the wheels on a lathe and turn the tread down to razor sharp

Put a drop of super slick teflon lube on each axle after polishing.

Epoxying and redrilling the holes in the wheels I didn't think of, but that's good.