The New York Times's Frugal Traveler managed to avoid renting a car to drive up to far northern Honshu for a hike around the famous hot springs there -- then spent $100 a night at the ryokan for his bed and meals. I'd love to do this some day.
"Regardless of the legal speed limit, your Buick must be operated at
speeds faster than 85 MPH (140kph)."
-- 1987 Buick Grand National owners manual.