I personally would be perfectly fine with a default software limiter that can be disabled when you get to the track (or a German autobahn). If you get in an accident on a public road with the car in track mode… they get to throw the book at you
Even modern cars have some trouble knowing the actual speed limit of the road you're currently on.
In Canada I don't think the speed limit is ever higher than 110 or 120km/h - limit to 130km/h and have an override, get full on in trouble (incl loosing all insurance) when disabled.
If track use only maybe even have some kind of device that isn't publicly sold to disable the speed limit there.
Also I doubt any north American car is randomly gonna show up at the German Autobahn - gonna get across the Atlantic first
