Surely the (virtual) distance of the reflected image is the same as the distance of the (real) car, so no refocusing needed. The mirror itself is much closer than the car, but it's the picture in the mirror you're looking at, not the mirror.Nope. I can't re-focus that fast. Eye balling the driver with a life saver works better.
I have always been very anti, but as I get older and less supple I am slightly tempted. Any suggestions as to which model? This would be for a flat bar tourer
I once saw an ad for little mirror that clipped onto glasses. I'd like to try one of those some day.