Voted the best invention since 1800 by BBC Radio 4 listeners (receiving 59% of the vote to the Internet's 4%) and as one of the best eco-inventions by CNN viewers, it's a zero emissions vehicle that already exists. The bicycle may not be high tech, but it is effective transport, especially if you pick a model- from a folding bicycle to a work bike- suited to your needs.

Jan VanderTuin of Eugene, Oregon's Center for Appropriate Transport (CAT) has spent decades trying to educate about what he sees as an under-utilized mode of transportation. In this video, we stopped in to check out all his rides of all different size, shape and function.