Something I spent a few days doing this week was doing a cut and polish on one of the trucks. You spread some abrasive goop over an area then take a grinder with a firm sponge pad on it and polish it till it is nice and shiny. Takes a thin layer of paint off as well as all the baked in red dirt. The bottom half has been done and the top half has not. The whole thing looked like the top at first but it actually seemed white before I started. Nice shiny bus!
As the trucks are pretty big it was annoying to do the top half on a ladder...yay for windows not needing to be cut and polished! Fun stuff!