There is a scene in Groundhog Day where Bill Murray decides to do a good deed for a car full of ol’ ladies in an old Dodge Dart. Also the old Spencer Tracy drove Darts in “Guess Who’s Coming to Dinner?” and “It’s a Mad Mad Mad Mad World”. And who can forget the Dart that took out the Peterbilt in Duel?
IIRC the car that Dennis Hopper drove in Duel was a 67? 4-door Valiant. Note that that’s important or anything ;)
About as “traveling salesman” as you can get!