Algodoo

"all wheel drive"
You can change the gear ratios and engine speed.
anyway...1, 2, 3, 4 are gears, down arrow is brake, left is engine direction toggle(so you can back up)
rear opens.
I included a simple scene. Try messing with the friction on the tires and stuff.
Its kinda slow with the wagon, maybe get rid of it.
by all means, please feel free to modify/improve/upload this scene or car. Maybe put a machine gun on the top or something.