Starman (1984)

Either Jeff Bridges or Jeff Daniels is a man from outer space who lands in I'm going to say Ally Sheedy's backyard. Does she live on a farm, maybe? (It's not Ally Sheedy, though. Mariel Hemingway?) Anyway, they have to drive somewhere, and whichever Jeff it is learns to drive from watching her but thinks a yellow light means speed way up (because she's always trying to make the light). I assume they fall in love and he goes back to outer space, and there is no way that they aren't being pursued by the government.

Dude, turns out it's Jeff Bridges and Karen Allen!
Into my Netflix instant queue with you, Starman!