I don't tandem with my car and don't run super aggressive lines with my car. My goal for each and every event I do is to be able to drive it home in one piece. I purposely not put my car in situations that will prevent me from taking my car home in one piece. If the oem safety equipment is sufficent to pass inspection for the road racing and drifting events I do, then that's good enough for me. A roll cage is never going in my car since it is still my daily and no harnesses due to the lack of a roll bar or cage.