I think, the more you enjoy your cars, the more addictive it can be. If you are a true car nutt!, then the fuel prices wont even phase you. I never think about cost when playing or driving my car as it just puts a bit of a downer on the whole experience. I also think having a btter car each time you trade in, then it just gets even more addictive as you are just left thinking "god, whats next!" lol. So yes very addictive.