travel+transportation

Dan and Amy have been traveling around like crazy in The 39 Clues. Whenever I go on vacation, I use many types of transportation methods. Tell us about unusual transportation you have used (or characters from other stories have used).

When they get to Venice and have to ditch their cars at the Tronchetto complex (parking lot), Dan said that Venice without cars is a great 'equalizer'. What do you think he means? What reasons do people have for owning cars? Does the type of car they drive give them any advantages?