About 15 miles south of Jesup, GA the Purple Whale hit the 45,000 mile mark.
We were traveling north on US 301/GA 23 and if I would have taken a picture through the windshield, with the rear view mirror in the frame, it would have shown almost a mile of two lane road total, with zero other cars on any of it. As we traveled the 45 mile stretch between Folkston and Jesup (a few miles outside the city limits of both towns) we probably saw 2 other cars. Using totally made up calculus, I figure that works out to forty-five thousand cars travel on that road that way a month.
I probably would have taken that photo if I had though to take one using the same framing while Donna was driving on I-75 just north of Ocala, FL. All 6 lanes of the Interstate (3 in each direction) were stuffed with cars with usually nothing more than a car length between them. If you could have stood in the median so you could watch both flows of traffic and could count really, really fast I bet it would come out to be about 45,000 cars an hour.