Despise the presence of a bunch of Van Pattens (a stalwart of a lot of these teen-hijinks flicks), this is a pretty decent run-of-the-mill teen-exploitation flick. The big twist being the fact that ex-Frank Zappa drummer Tony Bozzio and his wonderfully beautiful wife at the time, Dale Bozzio (of previous Joe's Garage, Hustler, and Playboy fame), she of the squeaky voice and large talents, are both in the movie. The band, US Drag is credited, and they play the title track "Lunch Wagon Girls," Mental Hopscotch," and "Walking in LA". They of course were really Missing Persons. Not sure if they hadn't come up with the Missing Persons band name yet (MUCH better than US Drag), or if they were hiding the fact that they were in the movie in the first place (not sure why), but I remember seeing this on some late-night channel around 1988, hearing the songs, and thinking what the hell is Terry Bozzio doing in this?
Review of Lunch Wagon
