Calfee Family Convertable Tandem at NAHBS
This Calfee tandem features S&S couplers, making it a modular system so that it can be a cargo bike, a tandem or even a triple. In this configuration, it places the child at the front of the bike while leaving the steering to the adult behind them. It is possible, however, that the handlebars would interfere with the young rider up front.
Check out www.calfeedesign.com.