Sweet Tooth's rig.
It's never been done, I can't do it. Don't have the knowledge.
Specifically the ice cream truck from twisted metal black. Not the new one and not the original. Guns and rockets. If possible the ability to also launch explosive barrels.
@GetTheClicker The only downside is the model's quality. Unless the San Andreas mod used in the link (which requires a facebook account to watch) is already HD quality then the model's good to go.