Two thumbs up on both the title tune and the movie, and this video gives you a good taste of how it all goes down.
He drives around rural California fighting various dumbasses and losers, along with chasing his girlfriend around. An orangutan named Clyde is his partner and gets some of the biggest laughs in the movie, along with Ruth Gordon who is always a little cranky and not taking any bullshit from anyone.
Highly original and memorable. It’s been literally decades since I’ve seen it, but I plan to watch soon. It’s funny and filled with great music and is just a good time.