We tried out the trail-a-bike with Oscar a couple of weeks ago, and so long as we're not going uphill, he can pedal for the both of us so long as I steer and provide a bit of balance. Now he is really keen to tag along on trips with me — he's done the ride across Gatineau Park for groceries a couple of times now and has pedaled intermittently and been pretty good about staying on and being safe. I took Viv on some errands yesterday on foot (with the carrier) and she made it almost all the way across the viaduct into the park before I scooped her up and the rested in the carrier the rest of the way to the Plateau. We took the bus back and she sat really well like a big kid while we made faces at each other and took the milk run to get us within walking distance of home. Woo, mobile kids!