Click here . Carts could be much larger than that pictured with higher sides. Carts could be hauled by an ox, horse, mule, donkey, or dog, or a tem of any of these. The vast majority of ancient Greek transportation was in sailing ships. Click on the menu derectory below then click on architecture.
People still walk, and they use two-wheeled carts too.
When you go to the airport you see a lot of people walking and moving their luggage on carts. In ancient Greece people travel almost entirely by water using sailing ships. They walked or rode chariots or carts to the port where they got on a sailing ship. Today we have more options. We still have ships but be also have buses, trains, and planes.