Fodor's Expert Review Camper buses
These buses serve permitted backpackers and those staying in campgrounds along the road. Seats in the back of the bus are removed for gear storage and there is room for two bikes (the bike spaces must be reserved ahead of time). While there is no formal narration, bus drivers aren't likely to let you miss anything important. The $40 pass includes transportation anywhere down the road as far as Wonder Lake for the length of the backpacker's stay; kids under 16 are free. Tell the driver ahead of time where you'd like to get out.