You know about food trucks, but New York City is full of other types of unique mobile truck businesses. And no, we’re not talking about the NYPD trucks that process delinquents…

1. Del Re’s Knife Grinding Truck

“It’s like old New York,” says a happy customer waiting for her kitchen knives to be sharpened Saturday morning near Columbia University. 58-year old Dominic Del Re is from Italy and was a commodities trader in New York City. He decided to get into the mobile knife sharpening business after the stock market crash of 1987. The truck is from his wife’s uncle, a knife grinder in Montreal, who also taught him the trade, which was passed down from his wife’s grandfather. He started in Brooklyn and now goes all over. He doesn’t like photographs, but will jokingly charge you $1 per shot. And he has a strict no weapons policy.