Town, not done, need help

Town, not done, need help

SFINX
I would like to add a driveable car to this model, but making the car in Sketchy Physics is too big piece for me. I tried to add some downloaded driveable models, but they fell through the ground. Also trees are not done, because car should go through the leaves. So i will add them later, they are ready to be placed next to the town. So the model how is it now should be static and unbreakable, and later i will add some physic parts like trees, dust bins, road signs, gates and so on. I would like to ask you if someone could help me and add some driveable car throught the SketchyPhysics to my town. Feel free to use this model.
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