Get On The Bus

Can anyone tell me what "Oprah's Wildest Dream Bus" is? I'm beyond fascinated. Like, I kind of want to make a low budget indie horror movie about people getting on "Oprah's Wildest Dream Bus," only their wildest dreams turn out to be, you know, not what they bargained for. Like a Steven King novel. And then at the end, Oprah gets on her own "Oprah's Wildest Dream Bus." What should she get- Ham? More power? Same thing?