loading it with explosives and using it as a guided missile. This last concern is the only one that I considered a real issue, but even that is not significantly more dangerous than loading up a regular van full of explosives with a timer, then setting the timer to explode before you leave the vehicle next to a school
I see that much more dangerous because the criminal doesn't have to overcome the fear of getting caught in the vehicle with that load, or getting caught by cameras as he leaves.
And he doesn't have to stop or park somewhere. And he doesn't need any timer, just a remote to command the explosion, whenever he wants, even before target if things don't go as he wishes.