This German commercial shows what happens when racers drive their tuned up cars on residential streets too fast. One homeowner has had enough and uses some of the finest springs money can buy to exact his revenge on the unsuspecting driver. He finishes his work just in time, and after putting his home made speed bump on the road in front of his house he takes the camera from his obviously nervous wife and films the results of his labors. The car approaches, hits the speed bump, and the springs are let loose, launching the car through the air in summersaults. Old cranky German: 1, Street racer: 0.