The New York Times writes about the tension between the Los Angeles taco trucks and the local Mexican restaurants. The trucks have been operating illegally (but rarely enforced) for the past several years by parking in areas for longer than the allotted 30 or 60 minutes. Residents have grown to love the convenient and cheap eats, yet, local restaurateurs have found it difficult to compete with these mobile meals-on-wheels. Read more about it here:
http://www.nytimes.com/2008/05/03/us/03taco.html?_r=1&oref=slogin