My track adventures led me to Elkhart Lake, Wisconsin, to Road America ("The National Park of Speed").  The track is just over 4 miles long, which allows high speeds and a modicum of space between cars.  I got to see the control room, too.  The competitive Ferrari event that was held during our stay was interesting and there were some freakin' crazy cars, but the best part was making some new friends.  Got to see a  nice part of the state, too.