Swingers Easter Egg - Lucas Reference

The licence plate on Trent's car is "THX 1138". Another reference to George Lucas' first film. The first time I noticed this was when the guys are driving from party to party and they all pull up and park, diagonally to the curb, next to one another. Trent's car is the first to pull up to the curb. I haven't gone back to look at the first act of the film to see if the plate is visible there.