Some of the more obscure 60 / 70's car film are interesting for their car content (though not for their plot!)
Vanishing Point
Duel (with the mystery truck)
Two Lane Blacktop (with a very wooden James Taylor as the driver)
Death Race 2000 (David Carradine)
original Gumball Rally movie
plus I enjoyed the Dirty Harry films and the Streets of San Francisco series for the views of 70's San Fran (Bullitt also set there).
Then there's the Blues Brothers for the sh*t box Dodge police car and the destruction of numerous other police cars.
(getting all nostalgic now

)