By the end of my day at Interbike, my feet were sore, but my heart was content. The electric bicycle industry, which seemed doomed to failure as recently as 2004, has made a remarkable resurgence. There were more e-bikes at the show than I had ever seen gathered in one place before. The designs varied widely. People are experimenting and innovation is flourishing. Big companies are taking the concept of electric bicycles seriously. This is very good news for those of you who wish to minimize the damage you do as you wander about this planet. Rejoice!