I've just realised that I have nearly no photos of L in the trike over the last 6 months; perhaps because we just use it as a transport option without thinking to take a photo.
However! As of this week, L-transporting in the trike has gone from this:
He seemed very happy to be making a more upright journey, and much less bothered by the bumps. (Which makes sense; sitting in a bumpy thing is more comfortable than lying down in a bumpy thing.) It is kind of terrifyingly old, though — a whole 7.5 months, no less. Scary.