This is a gimmick travel book, and the gimmick is awesome: the author made a bar bet that he could travel around Ireland with a fridge. And by "travel," I mean "hithchike."
Unfortunately, that's the funniest part of the book. The rest of it - I got the feeling the author hadn't quite settled into his narrative voice in a written medium; much of it sounded like the kind of prolonged story that'd be hilarious if someone told it to you while you were having a couple of drinks with him. That doesn't really make for a book, though.
Ultimately, this is a forgettable book with an unforgettable concept.