Thanks to Uncle Ed, the Wang boys can ride as one. We recently inherited Uncle Ed's trail-a-bike. It's a nifty contraption that attaches to a normal bike and allows tandem riding. Add an additional child seat mounted up front, and we have transportation for more occupants than a Smart car. The riding was a little challenging; the added mass and irregular weight distribution created some instabilities. Stupid me chose a path that included a decent incline, so I burned my quads trying to pump us all up the hill. Alas, the maiden voyage was a success, not to mention a hit... Casey now requests to ride 'The Big Bike'