[pax]

I see no real value in this one and can't imagine how anyone except a military person might have a legitimate use for it.

If the vehicle is moving, you have the means to get away from the threat. If you'd rather eliminate the threat entirely using deadly force, you also have at your disposal a very large, deadly, and fast-moving weapon -- the vehicle itself.

(Edited to add -- it does sound fun and if done safely I see no harm in it. But the question was whether it was of practical value or not.)

pax