We wound up calling it the equivalent of a failed Move Through, using the STR (40) and speed (35mph) of the vehicle.
The character wound up taking 16d6 of normal damage. The character driving threw a 3 on his attack roll, thus doing max damage. Badly injured and deeply unconscious (we're playing super agents, with NCM), the character blew through the wall and wound up in a pile of wreckage inside the shop, still clutching the side mirror of the truck in one hand, and her pistol in the other.