Not much to do with the topic, I know, but this reminds me of Walter Williams' wonderful take on mandatory drivers' side airbags, and how the protection they offer makes drivers a little less careful than they might be. WW suggested a new idea to make drivers more careful and polite on the roadways: Drivers' side spears!
Man, I LOVE Walter Williams!
In South Africa, you can get a flame thrower installed
that ignites into a wall of flame on either side of the car
when threatened by carjackers. You just push the button and
it’s crispy critter time. Legal too!