Hi Fluff , i know planes have auto pilot but they have had it for years plus their are no actual traffic lights up in the sky even though their are invisible flight paths and junctions but unlike car drivers they are put through more stringent tests so maybe something like tuffer testing would be appropriate and cars that will either take over driving when your tired or won't start if you've been drinking but at the end of the day all i've really been getting at is wanting a better proven system in the cars sooner rather than later and i'll have to come back to you as something has just come up in the family which i'll explain in a bit via pm ..
Ian .
Ian .