Relatively obscure though recumbent bicycles are, many people appreciate the ergonomic and aerodynamic advantages of the quirky two-wheelers. If quirkiness is your thing, however, then a recumbent tricycle might be even more to your liking. Not only do they look pretty sharp, but they're also more stable than the bicycles. Unfortunately, however, most of them are also quite cumbersome to transport - can you imagine trying to carry one up a flight of stairs, or fit it inside a car? Fortunately, there are some recumbent trikes that fold up. One in particular has been lighting up the recumbent forums lately, as it folds very small, very fast.