Riding in the rear seat of a tandem bicycle with your partner piloting you ... If Sandy stops pedaling even half a stroke, we fall down. There’s an art to reading each other’s body language ...

While you could just buy a tandem and a solo bike, one couple recently took a different approach – they got California-based Calfee Design to build them a tandem that can be converted into a single.

Yet, nothing looks as lonely than a single person on a tandem. Revo is a prototype, bench-seat bicycle that looks good with or without a partner. Moholy-Nagy University of Art and Design student ...