The site's not loading for me (swamped?) so this is based just on what I can infer, but the thing that popped into my mind was the U.S. Midwest. As an avid motorcyclist, I am always seeking out curvy roads. I just got back from a three week vacation in Italy where there was rarely a straight road to be found (in the Chianti area, the GPS would be set for fastest route, the destination would be 60 kilometers away, and the GPS would estimate 2 hours to arrive.). But there are areas in Kansas where, if the earth were flat, you could see someone 30 miles ahead of you .