It's been a while since I have seen this film on Cable TV, but I find it a great commentary on the idea (from 1970, mind you) that people will be controlled with drugs (Ritalin, anyone?) in the future. THX 1138 (played by Robert Duvall) is a worker in a robot factory who didn't take his drugs leading to him making his "domestic partner"-type woman LUH 3417 (Maggie McOmie) pregnant. You can see him taken to a "white room" prison with no escape in sight. THX 1138's final car chase against the robot cops is a solemn, quiet one leading to the ending...

By the way, please watch the widescreen version -- the formatted version I rented years ago is badly made for us to see, let alone understand...