More than 3 opponents

[MirceaKitsune]

I was thinking what a nice change to Vdrift would be. I noticed it lacks a feature that other sims have, of adding more than 3 opponent cars at a time.

I think that would be fun... I always wanted to play with +8 opponents on a crowded map. Not sure if that would impact frame rate too much though. This would likely need a menu change too, but yeah I think it would be nice to allow a bigger limit