If you've never raced, but hung around racers or read about their exploits, you might be wondering what all that heel-toe business is about. Essentially, it's yet another trick racers use to get around the track just a little bit faster by matching the engine revs to the car's speed during a downshift. Doing so requires the use of all three pedals at once, though, so it takes a little fancy footwork and some good shoes to accomplish, and plenty of practice to accomplish well. There seems to be no end to the number of heel-toe instructional videos on YouTube, but this one by HookedonDriving seems to explain the skill best.

Watch the video on Hemmings Motor News.