Interesting article
Thanks Jimmie - very informative. I was only aware of the one problem - selective attention: where the driver is so focussed on spotting cars or "no cars" that a bike falls into the "no car" category. The perfect illustration of this is a video where you have to count the number of times a basketball team has the ball.
At the end of the counting, most people have not noticed that someone dressed up in fancy dress walked right through the two teams.
So I say "don't expect motorists to see bikes, and don't ask them to look twice - you are wasting your time". Now if only we could get them to indicate we would have more of a fighting chance on the road.