I like listening to Zubrin talk about travel to Mars. And what angers me, if there had been any "vision" either in Washington or Kennedy or Houston after the moon landing, Mars would likely have been explored by now. You have to give some credit to Kennedy, who like Reagan, forced the Ruskies to spend what they didn't have during the Cold War.
I haven't heard anything about his book. If you read it, please post a review.