In 1982 legendary British heavy metal band Spinal Tap attempt an American comeback tour accompanied by a fan who is also a film-maker. The resulting documentary, interspersed with powerful performances of Tap's pivotal music and profound lyrics, candidly follows a rock group heading towards crisis, culminating in the infamous affair of the eighteen-inch-high Stonehenge stage prop. The movie is in fact a biting satire and spoof of the whole rock and roll scene that passes itself off as a real documentary of a real band. Hilarious behind-the-scenes footage is combined with faux-concert clips to breathe life into the imaginary group. Directed by Rob Reiner, may he rest in peace.
You are searching for a spinal tap (not the band!) hanging in a parking lot. There is a neurologist near by if you need one.
Good luck and Happy Hunting!