From the 1960s and 70s on, sandwich trucks and lunch wagons, as they were called, become a staple in all parts of American. Meanwhile, urban areas, tight for space, were able to squeeze in numerous hot dog ice cream, soda, and pretzel carts wherever food traffic was heavy. By the late 20th century, there was enough modern technology available to make it more feasible to keep a wider range of food fresh cooked and served from a mobile vehicle. As a result, today’s food truck owner and mobile caterer have more options than ever before.