Taxi Driver

Other cars have liberated their drivers or connected them to others; Robert De Niro's cab enabled him to slink through New York's streets, observing and judging his neighbors without having to touch them. (If your love interest were Cybill Shepherd, you'd fear humanity too.) Martin Scorsese and Paul Schrader's psychodramatic masterpiece heaps a lot of baggage into the trunk, but it all fits.