There is also a summer beach shuttle service to Surfside and Jetties Beaches from downtown. As the guidebook states, Nantucket Town was designed in the 1700s, and its cobblestone streets and narrow lanes are not conducive to high-volume traffic. Streets become congested with traffic, especially during the summer months, and parking can be difficult, if not impossible. Simplify your stay by leaving your car behind. Once on the island, transportation is not difficult to arrange.
Taxis meet incoming flights at the airport and incoming ferries downtown.
Car rental agencies are at the airport and in town. They also provide free pickup service at your hotel or guesthouse or at the Steamship Authority. The latter two are at the airport. Mopeds are faster, but inexperienced drivers can get in trouble with sand on the roads. Rental agencies can inform you of the regulations.