I would say well over 25% of cars do rolling stops
Rolling stops in cars still tend to approximate the effect of a complete stop. Rolling stops on bikes tend to approximate the effect of the stop sign not being there at all. It's two different cost/benefit situations producing two different outcomes.
Rolling stops in cars still tend to approximate the effect of a complete stop. Rolling stops on bikes tend to approximate the effect of the stop sign not being there at all. It's two different cost/benefit situations producing two different outcomes.