Hey! Idid like your idea so much that I had to come back to your post after I saw it yesterday! I hope this works out for you and the initiative grows and catches on! I do not see a reason it shouldn't! You should also add a car rental, haha:)....Plus you have a great bonus- Barcelona is one of my most favourite capitals in Europe, after Prague of course, haha.... I am following you from now on to see what progress you get. Good luck!