5. The 2012 Mercedes-Benz SLK from Gangnam Style Before South Korea's Psy sang during halftime at a sparsely attended NFL game in Toronto, apologized for singing anti-American sentiment before performing for President Barack Obama and danced with Britney Spears on Ellen, he made a music video. That video was stocked with horses, explosions, yoga and Lego-style bowl cuts and made its way from every dorm room to every dentist's waiting room in this land. To a U.S. viewing audience largely unfamiliar with the Korean language, the clip and its horse-riding dance were just insane. Nearly 1.1 billion YouTube views later, Psy looks like the lone sane character in a 1970s sitcom surrounded by a crowd of insane co-stars trying desperately to throw the whole thing off the rails. Remember when MC Hammer was Psy's backup dancer at the American Music Awards and not a semi-retired rapper who had a Saturday-morning cartoon nearly two decades ago? That's the kind of ride it's been for Psy. In the middle of all of this, as we're reminded by CarGurus, is the red Mercedes SLK-Class convertible parked in an underground garage as Psy has a dance-off with someone in a canary-yellow suit. It doesn't play a huge role in the clip, but the ketchup-and-mustard aesthetic and amateur-night dance moves drill the vehicle into memory. Unlike Gangnam Style and its "Aaaaaaay sex-y lay-day" refrain, though, memories of the Mercedes don't linger for long.