they wrote "FURTHER" on that bus, so it was originally with an "E"?
and if so when was that changed? - I always thought it was "FURTHUR" on the front of the bus.
I guess the film will probably answer that for me...
In Tom Wolfe's book "The Electric Kool-aid Acid Test", it says the first painting of the bus labeled it "Furthur", but that was later changed to the correct spelling. They were constantly adding new layers of paint to the thing, so it was never the same twice.
I saw the movie tonight and thought it was pretty damn good. Especially the part where Kesey signs up for the US Gov't. acid research...Amazing they actually have audio recordings of the first time Kesey dosed!