A friend of mine went on a circus tour 2 summers ago and these are her pictures. They caravaned into Crowns, I love the paint schemes. Sorry about the lack of interior pictures.
Im not sure if they are still performing under the same name, but they toured in 2005 as Circo Mutante. The buses are a part of a larger collective based on the west coast called S.P.A.Z. More info on spaz can be found at http://www.spaz.org
I just went to the SPAZ site and I was disappointed that there weren't any more bus pics.
They remind e of when I was young, camping in the woods with friends, getting sick from the food we prepared, sleeping under the moon light, ahhh if I was only in my 20's again.