I took a look into the origin of the food truck once (internet rabbit hole ftw), and originally they moved - some still do these days. Usually serving a differe

I took a look into the origin of the food truck once (internet rabbit hole ftw), and originally they moved - some still do these days. Usually serving a different area each day or if you have two areas with non-overlapping break times even midday. But when it got more popular people started to complain that trucks would just stop where they wanted to and cities started to demand permits (I'm not saying they were wrong, just how it is). That made in uneconomical and sometimes even impossible to move around all the time. It's rather hard to just stop spontaneous and serve a crowd if you need a permit for each stop. So, these days, food trucks are mostly for show (that's the ones you saw) or company events. Company wants to feed all their employees something different than the usual grub, but not leave the campus for the event: Rent a food truck.