Spotted...

I guess that was me then. I had black swrve 3/4s and a red/grey (thin) striped t-shirt. (Fascinating stuff.) Hi! Although I'm guessing you were driving/cycling behind me and keeping a good distance as I didn't notice anyone in particular...

I was driving the van/trailer combo behind you.

Driving that thing is harder than cycling, especially with the commuter nods that think scooting up the inside of an articulated vehicle is a good idea.