WATCH | The ecological future of mobile meals might be the pizza-peddling Neapolitan Express, perhaps New York City's most energy-efficient food-truck street fleet.
For food prep, the trucks mainly use renewable natural gas instead of the usual propane. Max Crespo, who's been helming Neapolitan Express since 2007, rolled out his first environmentally superior truck in February 2013.
It's like '200 [fewer] vehicles'
His competitors' food trucks, he told Circa, "have gasoline generators [and] propane tanks that are environmental bombs." He said each of his trucks, by comparison, reduces emissions by "the equivalent of 200 vehicles, from a greenhouse gas-emissions standpoint."
Crespo said New York City government officials passed a pilot program to implement his fuel system in 500 next-generation food carts. Some Nathan's hot-dog carts are already using the natural-gas fueling system, he added.
WATCH | Here's more info about Neapolitan Express' self-described "food-truck fuel revolution."
Neapolitan Express pizzas are made with organic and non-GMO ingredients, Crespo added.
"We feel it's the best pizza in the world," Crespo said.
Crespo's favorite pizza on his own truck is the classic Margherita.
I could [pick a pizza] with a lot of toppings ... but if your Margherita's kickin' ass, then that's the one you judge it by.
He said more trucks are in or heading to Austin, Los Angeles, Atlanta and Washington, D.C.
All pizza and 'no more nightclubs' for Crespo
He's come a long way since 2007, when the former nightclub owner just "wanted to sell pizza to drunk people."
Ten years later, people are still lining up for the pizza. It wasn't too hard, he insisted, to leave the old gig behind: "No more nightclubs, I'll tell you that."
WATCH | If you can't get enough pizza (or at least videos about pizza), here are five pizza-related Guinness World Records.