Under-the-car "cow catchers" would need forwards positioning to handle the problem of angular objects that rotate upward when first hit, producing a pole-vault effect that punctures the armor. That flat cover in front of the battery case needs a left-right ridge that goes as low as the rear of the battery at highway speeds. Puncturing the front cover would probably capture the object and prevent the same thing from happening to the battery armor. Of course, that might damage other parts instead. If nothing under the cover needs re-positioning for safety, it would be a cheap retrofit. The row of screws that connect the cover to the front bumper might be used to mount an L-shaped bar, one alternative to a replacement cover with a molded ridge.