They have something similar near the town I grew up: http://maps.google.com/maps?q=columbus,+in+&hl=en&ll...

It was terrible the first few years. Nobody could ever figure out which lane they were supposed to be in, and ended up driving on the wrong side of the crossed-over section. Granted, the people here are still having trouble figuring out roundabouts, but I found this very confusing my first couple times through the intersection.