“Thunder Road” The movie was written, directed, and starred Robert Mitchum. He also wrote the theme song but another singer sang it in the movie.
Oddly enough Mitchum sang the song on a record which became popular on the regular radio disk jockey play. Mitchum actually did a better job than the professional singer who did it for the movie.
Thunder Road”
http://www.youtube.com/watch?v=tdwUpxkfSJw