Years ago, 1980s or 90s, a guy left his car window open on a street, and during his absence, somebody had tossed in a [unfused] block of semtex, the plastic explosive choice of terrorists at the time.
Maybe somebody did that to the car of the three gentlemen.
I once got in trouble for hauling around the Doomsday Machine, from the eponymously titled Star Trek episode, on a trailer.