Whilst I understand your passionate desire to spread the left-foot braking technique among drivers of automatics, I fear that the very people that you are aiming to convert will find the change beyond their capability. In my case, I have driven automatics and manual cars for the last 12 years, moving almost daily between the two. Before that I drove manual vehicles, including vans and small lorries for 50 years. The clutch action for the left foot is totally different from the brake action of the right foot. My left foot will never learn to apply brake in the desired smooth fashion. I have experimented on my automatic Mercedes-Benz and always apply too much brake too quickly for safety. My left foot is still applying a clutch. There will be many like myself who are too old to change.