"Duel" was another early 70s TV flick that spooked me as a kid.

Don't know how I recall but when my Dad and I watched it, it was the night Nixon was resigning. I remember they kept interrupting the movie. AAAANYWAY, after watching Duel, I tended to keep a close eye on Semi tanker trucks for a while. ALSO...... I believe Duel was Steven Spielberg's first movie.

LOL What made me think od Duel?? Right now, I'm watching an old Gunsmoke rerun with Dennis Weaver.