The only time we drive our car is to AK or Blizzard Beach, but for different reasons. AK because the bus service is spotty and Blizzard Beach, so when the afternoon shower comes, we're not one of the 2,000 other people waiting for buses under a canopy built for 25.
Everywhere else we take Disney Transportation. Who wants to mess with driving while on vacation? With all the crazies on the Disney roads, who can sight see while driving?