In most of the world, roundabouts are a fact of life. Traffic enters one way, does a counter-clockwise do-si-do, and exits neatly without any trouble. However, notoriously car-loving Americans are one ...

Add Yahoo as a preferred source to see more of our stories on Google. There are some 13,000 roundabouts in the U.S., which works out to about one roundabout per 25,531 people. Can you imagine 25,531 ...