My Failure as an Eco Reader

I've been listening to a lot of books on CD of late. And in the true spirit of Eco Reading, I've been utilizing the public library. I've found that:

a) I'm able to check out new authors without investing in valuable and treasured reading time.

b) I like listening to speaking voices more than I like listening to the music on the radio.

c) And more to the point of this post, no trees were injured in the making of the CD.

However...

when I find a book I like, I wind up making unnecessary trips just to progress further in the book.

Yesterday, I went for a 60 mile drive in order to finish listening to Michael Connelly's "The Overlook" (the first but not the last of his books that I will listen to/read, btw) - greenhouse gases be damned. Not to mention that at the current price of gas, it would have been cheaper to buy the paperback.