Hi John/TCG, I wasn't originally referring to Stop-Start (now I have a name for it!) but the use of zero fuel when coasting. Stop-Start in my car is not all that refined but I am sure that it will improve in subsequent models. e.g. if you could program a ten-second delay before the "stop." I am
totally into the idea of cars that will just "by default" be super efficient but will just spin the wheels when you override it on command

probably when I'm 85 and can't renew my licence any more
