So I am off to Boston for the Greenbuild show, and as usual I take my Strida folding bike, as I have on many flights before. It is a great way to get around and see the City and I feel a little better about having to fly when I know that at least on the ground I am emitting less carbon dioxide. I go to check in and the attendant asks “what’s that?” I say a folding bike. She says “I have to charge you 50 bucks, we have a charge for bikes.” I say that I understand, bikes are usually big and awkward but this folds up and is in a case and is under weight and maximum bag dimensions. And it is a