That depends largely on where you plan to wander. Downtown Incheon, about 16 miles from Seoul Airport (ICN-Incheon Intl.), can be difficult to drive in. Make things easier by reserving something compact, fuel-efficient, and a cinch to handle. Bear in mind that Incheon is an excellent base to explore some of the rocky coastlines around South Korea. If your vacation is more about steering down lengthy stretches of road, you may want a ride with more trunk space and room to move around. What about a full-size car or a standard SUV?