Wikipedia
Heel-and-toe shifting is a driving technique used mostly in performance driving, although some drivers use it on the road in everyday conditions in the interest of effectiveness. It involves operating the throttle and brake pedals simultaneously with the right foot, while facilitating normal activation of the clutch with the left foot. It is used when braking and downshifting simultaneously (prior to entering a turn), and allows the driver to "blip" the throttle to raise the engine speed and smoothly engage the lower gear. (See Synchronized transmission.)
Usage examples of "heel-and-toe".
She was physically attractive, though not too much so, and she meshed into her surroundings anywhere in Europe, but try as he might, he could not break her of her distinctive heel-and-toe dancer's walk, the smooth, muscular flow of which made her stick in an observer's memory.