I'll repeat my old soapbox statement - mandatory speed limiters for all new cars set to 130km/h. Compulsory installation on older cars at the owner's expense if found speeding excessively.
And in conjunction, 130km/h limits on suitable stretches of road. It is a speed "limit" after all, not a "target".
Yes, I know this doesn't stop an idiot doing 130 in a 60 zone, but it at least stops them doing 200 in a 60 zone or anywhere else.

