Take a look at BS: British/American cultural differences. and BS: British-American cultural differences 2. Not that you really NEED to know any of this stuff - but for me, just noticing stuff like this is half the fun of traveling. Take notes, and come home prepared to add your own items to the list.

The best collection of roller coasters in North America is at Cedar Point, Sandusky, Ohio.

If you plan to drive in America, you'll need some time to get used to the way highways are marked. Different symbols are used on maps and signs for Interstate Highways, US Highways, State Highways, and County Roads. Whereas, in Britain, highway signs usually tell what city or town they go to (this way to Canterbury, that way to London) in America they are usually marked according to the general direction (north this way, south that way). Odd-numbered Interstate Highways run generally north-south; even-numbered ones run east-west.

Most cities are laid out on some kind of grid (except notably some of the old ones on the East Coast, like Boston and Philadelphia), and there is often some system to the way streets are named and house numbers are assigned, although the system varies from city to city. Usually the numbers get higher the farther away you get from some central axis. In some cities, the "streets" run north-south and the "avenues" run east-west, or vice versa.

Don't try to drive coast to coast unless you want to spend your whole vacation in your car.