Move Creation Workshop

[Amaterasu]

Trying to make the car a move, but it will also give him the basis for other moves that he can do while using it.

How about creating a "big" move with a number of sub-moves then, which you can later add by upgrading the original move? As in so:

Car (Requirements - Price)

Warren summons his car [add link to a picture], which has XYZ dimensions and takes X seconds to summon. It has a variety of armaments that Warren can deploy, but only one at a time. He can switch between two armaments at any time, taking Y seconds to do so. If the car is destroyed, Warren must resummon it.

-Armament 1
-Armament 2
-etc.