One of the problems with electric-powered vehicles is their near-silent operation, which could pose hazards to pedestrians. Various solutions have been proposed, mainly by adding engine or bell sounds. Domino's Pizza in the Netherlands takes it one step farther, with a recorded voice praising its fare.
I could see where this could become extremely annoying after awhile -- judging by the reaction of passers-by, though, at this point it seems to be trying to murder them with laughter.
Via Dave Berry