It seems like a practical idea to me. If you accidentally tap a parking meter, all you'll do is scuff the bumper. NOT the car. Or if you take your eyes off the road briefly to light your smoke and the old lady in front of you slams on the brakes to avoid running over a caterpillar.. no harm done. Just a small dent or scratch on the device intended to protect the actual vehicle from damage. I remember coming out of a store once to find a dude hanging around my 1975 Ford pick up with 3 on the tree and white lightning rims. That's right! Sweet machine! Those things had some groovy options. I locked my keys in that thing once and used a coat hanger to retrieve the keys through the hole in the floor under the gas peddle. They
don't make em' like that anymore. Anyway, I approach the truck and this guy says "hey, I accidentally bumped your truck". I look at the damage and say "No worries man, just a scrape on the bumper". And we go on our merry way. Try that nowadays and see what happens. A minor ding on a "bumper", (remember that thing that was designed to protect the actual car) can cost you upwards of $15,640 (front bumper of a Lamborghini Murcielago).
In the new world, bumper damage will not be recognized as car damage.
AND SO IT SHALL BE WRITTEN!