Until the arrival of the US military during the second world war, cars were entirely banned from the islands. Even now hire cars are banned, and only residents are permitted to own cars. Motorized bicycles or mopeds are available for hire and heavily used by locals and tourists as well. If you wish to use mopeds, rentals are very common, regulated and priced competitively, but beware: "Road Rash" is a very common affliction affecting many tourists. Note that travel is on the left side of the road opposite to U.S. travel.
More information available from: