Professional Tailgating

Last night in the middle lane of I 75/71, another tailgater latched onto my car. After about 5 miles, I got into the right lane and he sped on by, only to latch onto another slower moving vehicle. I ended up passing him as he stayed right on the bumper of the slower car. It wasn't until later that I realized what he was doing. As a student driver in the NASCAR freeway's professional drivers' training school, he was practicing his drafting--saving gas at 70 mph!