Backing up. Beep, Beep, Beep...

Since people are too dumb to not walk behind a car that's backing up even though they know the driver can't see off to the side since there are cars parked next to him/her ... doesn't it make sense to put back-up beepers on all cars Not Just Trucks?

4th of July scam

Fireworks. 15 minutes of color and bang... followed by 40 minutes of traffic