I am not the owner of this mod.

Is deformable, parts fall apart.
Dirt version has a variable to set the fill level (weight increases).
Chest version have hinges and latch.
TNT version doesn't explode at all
Furnace version can move forward or backward when you put Items on it (Items are part childrens, quantity and direction are variables). It uses a new Engine and Fuel types I made solely for this thing. It can't steer.

It's also skinnable and it includes 3 Skins: a template, the skin UV map and a Racing version.

Edit: I wrote Minecraft 2 times and Minecart 0 times in the Zip filename because my hands don't obey me...