Switching from Dangerous Propane Tanks Neapolitan Express’s rst truck had a propane-fueled oven. Despite the smell and other inefciencies, customers lined up for the pizza. “There’s a business here,” Crespo realized. “We just have to gure out how to make it work for the customers and for the environment.” With food trucks, it’s not just about fuel that powers the vehicle, but the ovens inside as well. Between re hazards and fumes, fuel

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