I live and breathe bike transportation. Does that make me a granola-crunching, world-saving utopian? Actually, my riding has a lot to do with what's good for me. Riding makes me healthy. It saves me time. It makes me feel good and gives me energy to do more in life. Of course, getting around by bike is a green thing to do. And altruism does have its rewards. Frankly, I wouldn't mind saving the world. Makes one want to crunch some granola.