cruise-in
n.— «This unofficial gathering, known to participants as a “cruise-in,” is a throwback to the days when men showed up at diners to show off their pompadour hairstyles, driving hot rods for the girls in poodle skirts and ponytails.» —“Muscle cars and music mix at weekly ‘cruise-in’ event” by David Massey News-Journal (Daytona Beach, Florida) Nov. 30, 2005. (source: Double-Tongued Dictionary)