I mean, every person who purchases a car does so, at least implicitly. The very act of obtaining a driving license contains an (often explicit) promise to abide by the rules of the road.

You’re conflating two things and ignoring the thrust of the point: nobody buys a fast car to drive it slowly. Maybe some people do, the vast majority do not.

If promises about licenses meant a damn, we wouldn’t have speeding cameras.

The promise is still made, regardless of whether one plans to keep it

No, the “promise” is forced. It’s like an arranged marriage.

Except in Germany!

(Technically correct is the best kind of correct)

I believe the Autobahn still carries the legal requirement to drive at a safe speed at all times. Pedal to the floor racing is not often safe speeds for a public road.

Yes, yet [1] happened where someone took precautions to drive safely at >400 km/h speed.

[1] https://www.drivencarguide.co.nz/news/no-charges-laid-on-bug...

It sounds like an investigation was quite reasonable, and then it cleared him before charges were pressed. Seems pretty good!