Same, Soundgarden and Monster Magnet. My version doesn’t need a serial key, it can just be installed. Copy the rest of the data from the CD to the game dir and you can even play without a disc.

Yes, that’s the one. The version you played was probably the PC version, which is an improved port of the 3DO/PSX version. There’s a lot of games in the series all just called Road Rash, which makes it more confusing to Google.