There is a fairly decent network of major arteries spreading through the country and plenty of vehicles to get you where you need to go. There are buses, private compact vehicles, taxi vans (matatoos) and motorcycles (forbidden!).
PCVs have an ongoing who's-been-in-the-fullest-taxi-game. Adults count as one, children count as one half, and chickens and drivers count as zero. The most I've heard is 23 in a taxi with a 14 person carrying capacity.