Many food trucks have become a entrepreneurial trend among young culinary students wanting to show off their skills in a new and innovative way. (via http://usatoday30.usatoday.com/life/lifestyle/2011-08-10-gourmet-food-trucks_n.htm)
infographic in how to open a foodtruck. Bureaucracy - check that first. City, County and State in the US. You just wont believe how many laws there are and how much they want to prevent or put you out of business.