It's actually pretty trivial to build a mechanical governor and they have existed for hundreds of years [1] Everything comes down to political will. The Germa

It's actually pretty trivial to build a mechanical governor and they have existed for hundreds of years [1] Everything comes down to political will. The German manufacturers have an informal agreement to limit all their cars to 155mph as to avoid the government adding further limits to the autobahn. [1] https://en.wikipedia.org/wiki/Centrifugal_governor https://en.wikipedia.org/wiki/Centrifugal_governor