Really where I fly they drive on the left and the right, and sometimes right down the middle or along the median, or they fly over / under bridges drive though hills, and in a couple of cases drive off the freeway and up and over a group of bldgs to get to the other side.
The thing to really fuss about is here in the states, the airport workers are sitting on the wrong side of the vehicles at the airport. A real immersion breaker if you ask me. ;p Bwhahaha