Never Leaving Your Car
These days, you can go to drive-through restaurants, drive-through pharmacies, and even drive-through grocery stores. You never have to leave your car anymore, which is a very rare thing in other countries. Brick and mortar stores and restaurants will soon be a thing of the past at the rate we rely on convenience and technology.
Lots of State Pride
Whenever Americans travel, they usually refer to where they're from by the state rather than just by saying they're from America. Someone from Italy, for example, will likely not say they're from Rome specifically. It's an odd thing Americans do that isn't picked up on until it's pointed out.