I've already bought my plane ticket. Going to Japan (from USA) in June. I'm looking to rent a bike (probably an Africa Twin) and ride around japan for 4-5 days (visit Mt Fuji, eat Kobe steak in kobe, visit Hiroshima and whatever else looks interesting). The rental company does not offer a GPS. I'm having difficulty finding a GPS that has maps for Japan. I would like to buy something I can use in the USA as well as Japan (as well as other countries). The Tomtom rider 550 does not have maps for Japan. Any help?