As we're nearing the end of this 11-day trip, Cat Lady and I started iterating all of the different methods of transportation we've used since we started. Different instances of the same method don't count, nor do vertical/indoor methods like elevators/escalators. So far, we counted:
car/truck
train
bus
trolley (admittedly not that much different)
ferry
tractor-pulled wagon
walking
wheelchair
Hershey "factory tour" ride (ok, that was indoors)