I'm going to start working on lyrics for this song since I don't see any up on the boards. Looks like it'll be a tough process because a lot of it is very heavily accented and difficult to understand, but I'll try and figure it out!
At the risk of being shot down yet again as a newbie poster I thought I'd venture another comment/question.
The Bus Driver's Song is one of my favorites, and while I fully realize it's a fictional tour I was wondering if possibly the river that flows like Paula's hair might be the Ruamahanga River. It flows into Lake Wairarapa which I gather is near where Jemaine is from. Correct me if I'm wrong, and I'm an American so I'm not sure of the pronunciation but perhaps a kiwi might be able to clear it up better.
Just a guess.
edit: I found a post from a couple years ago that thinks it might be the Whangaehu River.