Trivia: The famous "Dukes of Hazzard" sequence was the filmmakers' wry commentary on the uncompleted state of Interstate 105, which had become a running joke among LA motorists. It was finally (and quite uncoincidentally) completed in late 1993 shortly before the film's release, years behind schedule.
Trivia: Dennis Hopper's line about Pershing Square being the "pickup spot" (for his ransom money) was a double entendre. For decades, Pershing Square has been a notorious locale for soliciting gay sex.
Trivia: When the bus crashes into the plane at the end, the company logo on the plane is "Pacific Courier." This fictional company name also appears in "Die Hard"--it's on the truck the terrorists show up in (except Karl and Theo, who arrive by car). Jan de Bont, who directed "Speed," was DP on "Die Hard."
Trivia: At the beginning of the movie, Keanu Reeves breaks some glass on the door of the bus. This was not scripted; it was purely an accident and kept in the final print.