Preserving old transport

It's strange how inspiration works, or doesn't! Yesterday I went out to paint a scene, which was ok,but..........it didn't really "float my boat" as they say. I turned around to come home and saw the scene below:

The old buses are being restored and used occasionally for nostalgia trips. The central one carried the number and colours of the route with which I was familiar as a boy. Then the horses moved into part of the picture providing a counterbalance (I've never drawn horses before); then the two men emerged from working on the buses. I really enjoyed working on this drawing: I hope you have equal enjoyment looking at it.