actually, how to enforce this is simple..
you just make the parents buy 2 body bags.. the types used by
the coroners..
one for their child, and one for any incidental person they kill
during their street races..
they are to display the body bag in their home prominently and
when their child is killed, the parents are to go to the accident
site and deliver the body bags to the coroner...
with the death taboo in most countries, and all these things,
you can bet the parents will clamp down on the child...