I think that the IDEA of Car Wars would be great but not the actual game mechanics. SFB was a hard translation for Taldren and they had a complex system. The Car Wars rules were pretty simplistic.
I also think it would work better as a multiplayer game outside of MMORPG. After all, it's a combat game and not an RPG. It would be better if it were more like MechWarrior or something. A single player campaign plus online maps vs. other players.