Dirty Mary and Crazy Larry is one of my all time favorite car chase flicks.
Peter Fonda did several "anti hero" films around that time including Easy Rider.
Other good chase films:
Gone in 60 Seconds (1974 remade in 2000)
Bonnie & Clyde (Lots of old time car chases)
Duel (1971) A car vs semi truck written by Stephen King Starring Dennis Weaver
Mad Max (1979)
Gumball Rally (1976)
Hell on Wheels (1967)
Mother, Jugs, & Speed (1976)
Smokey and the Bandit (1977)