Dear Umbra, I want to reduce my carbon footprint. I already take a commuter train to work, but the station is down a steep hill from my house, so I drive the first mile or so in the morning and back up the hill at night. The train station has lock-ups for cycles and I'm interested in that -- but I have a disability that affects my whole right side, arm, foot, leg. I'm not able to stay balanced on a conventional two-wheeled bike but have seen specialty adult-sized tricycles around town -- mostly pedicabs for tourists. Do you know where I can find a lightweight, adult-sized tricycle or someone who can custom make one for me? SMA,
Kensington, Calif.