It's a much bigger leap to go from "punish people for speeding" to "physically prevent their car from going past a certain speed" than it is to go from "prevent this car from going past a certain speed" to "prevent all cars from going past a certain speed."
your slippery slope argument is not very convincing. What do you suggest be done (that isn't already) about people who regularly speed, putting themselves and those around them in danger?
Judges already have the power to permanently revoke people's license to drive, the problem is they don't.
It's a very simple problem with a very simple solution. If someone proves multiple times they won't follow the rules of the road, revoke their ability to legally drive. Most states go to jail time on the first or second offense of driving without a valid license.
This whole argument smacks of "let's not make things too hard on these people willfully violating our laws over and over and over again."
Is that what the bill proposes? everyone's vehicle is now monitored all the time?