We’ve posted about “I See By My Outfit” by Peter Beagle before. It’s about two beatniks who go cross country on Heinkels and it’s a great read. It’s easy to find a reprint but not so easy to find the more vintage paperback copies with the scooters on the cover art. Here are two of the better examples.
I have the second one! I got it from eBay after borrowing a copy from my local library and falling in love with the story.
(The library copy was a modern Penguin with a cover photo of…a MOTORBIKE!)