Other
Motorcycle, also know as AUTOBAI: At all tourist locations and most stations. Need an International Driver's License. (￥3,000/day)
Hitchhiking: First and foremost-USE COMMON SENSE.
Japan is perhaps one of the safer countries in the world to do this. It is a good idea to have a little gift to share (smokes/cookies).
Rinko Bicycles: Collapsible bikes for easy transport on trains. (Approx. ￥40,000)