And in Germany you can drive as fast as you want on the Autobahn.

Seconed - in the US, motor clubs often rent out racetracks for High Performance Driver Education (HPDE) days; costs around $500 for a few hours of track time in your own vehicle, optionally with an instructor. It's a lot of fun and educational indeed.

I work in racing, not many people turn up with stock road cars / bikes.