Idk if they did this in the USA too, but in the netherlands they set up a sound system on a Dominos pizza scooter and everytime it drove it would make sounds like mmmmmMMMM Dominos! mmmMMMM tasty tasty (in dutch that’s lekker lekker) mmmmMMMM PIZZA! and if it was waiting with the motor running it’d go dominosdominosdominosdominos all in a human voice