The Vélib' program in Paris has truly revolutionized the city and has vastly improved quality of life. The citizens of Paris and tourists have readily taken to the program because it is affordable, easy to use, and fun.
Sorry, Segway, but I'm not smitten with your human transporters. I can't think of anything more harrowing than trying to navigate Rome's narrow, cobblestone streets while aboard the Ultimate Green Machine.
I start my week-long couch surfing adventure scrolling through the hundreds of hosts listed on the Rome page and randomly pick one. "Hi there, could I stay on your couch Sunday night?" I write, cheerfully.
If we really want to make a difference while we travel, we need to make better, more informed choices. Real sustainable travel is about more than reusing towels, turning off lights and hotel recycling programs. These days, it has to be.