Ok. I think I've allready finished adding vehicles and customization. This is what I have:
So we have now breakable cars! If you hit the top of the car it will break. There is a jeep, wich is the best car available (and the most expensive) and a mini van, slow but very stable. I've also added a motorcycle, very unstable but very fun to drive! (maybe I'll add ragdoll physics to this one)
I've solved almost all the problems I've had. I'm almost done adding music and sound effects, so, maybe in a week or two I could launch a public beta (I still have to add an atlas and start using an asset manager, and finish some details here and there)