In your Telegraph column you mentioned a test near Berlin that showed that left-foot braking was quicker because of the time lag in transferring the right foot to the brake pedal. Like many drivers, I learned many years ago on a manual car and when I switched to an automatic used the same technique to avoid confusion. But, to get the real advantage of left-foot braking, would you have to keep your foot over the brake pedal? My foot is in the well by the side of the pedal and would take as long to get to the pedal as the right foot. We were always taught not to rest the foot on the clutch pedal to avoid 'drag' and the same would seem to apply to the brake pedal, particularly on a long run.