heres another one,
alot of people liken the front of the 84-86 gn's to darth vaders mask. the head of the buick division was a huge star wars fan at the time, and definetly thought the new 84 gn's front end should resemble vaders mask. when george lucas heard of this, he had one of the new gn's shipped to one of the return of the jedi sets during filming and if you watch the movie at about 2.46:59, pause it when you see the 2 storm troopers marching past a tie fighter with the emperors guard. you have to go real slow but you'll see a gn off in the back next to a shield power generator. you may have to go in forward and reverse several times and get real close to your tv, but you'll eventually see it