would you mind elaborating? it's been for years on my book list. but if it is neither about zen nor about motorcycles on a meaningful level then i can probably remove it.
It is a philosophy and adventure book, not about Zen, but filled with many of the author's own unique ideas. He studied Eastern religions and they do inform some of his ideas, which he combines with Western thought in an interesting way. It's off-beat, but I personally found it to be pretty inspiring and would definitely recommend reading it for anyone interested in philosophy.