I've taught one on one once. I was asked to do a driving session by the local drive green group (aka hybrid group). It went quite well I think. He had a manual transmission Tercel and I taught him the basics of timing lights much farther ahead than normal people, reducing brake use, keeping speeds low. Then, we got to the fun part and did some P&G instruction. It took a little bit (as it did when I got instruction on it), but he got the hang of it. He later went on to get on the top 10 list here on EM.
