I haven't read a lot of biographies. Sam Walton's biography was interesting and a light read for the most part. I read mostly books on marketing and human behavior. And when I say "read" I mean "listen to" because I drive an hour to work. The last book I really enjoyed (and this was several years ago) was Made to Stick. I think it would be interesting to most anyone but probably more so to those who are trying to market a business/idea. So just throwing it in there but I doubt its a contender.
Have a safe trip. I just went on an exhausting 3 day trip. I hope you get some time to relax... kind of sounds like you will