Rentals cost about US$55 per day. Many companies, including the following, will pick you up at the airport or seaplane dock.
Budget (778-9636; www.budgetstcroix.com)
Centerline Car Rentals (778-0450, 888-288-8755; www.ccrvi.com)
Olympic (773-2208, 888-878-4227; www.olympicstcroix.com)
Vitran (778-0898; fare US$1) buses travel along Centerline Rd between Christiansted and Frederiksted. The schedule is erratic; buses depart roughly every hour or two.
Taxis are unmetered, but rates are set by territorial law. Prices are listed in the readily available free tourist guide St Croix This Week. Taxis from the airport to Christiansted cost US$16 per person.