This month TrainBoard.com has been having another weathering contest. I had sat out the February contest but this month I am in. Between doing some DCC decoder installations and working on my contest entry I have not done much with the layout this month.
The theme for this months weathering contest is runner packs which was defined as any group of 3 to 4 cars, they don't necessarily have to be the same type.
This months contest is particularly interesting because everyone seems to be entering different types of cars. Here is a direct link to the thread for this weathering contest, it's worth a look.