Just did..and yes that maybe the case. But many ladies can and do then overcome any biological barriers by being specially attentive, focused and following regulations, just as their male counterparts, despite having the natural make up to do better, still manage to get into so many accidents and have a host of violations to their names!
I feel one of the reasons many women are determined to do better behind the wheel is due to the constant criticism and jokes aimed at them by the male species! It makes them hell bent on proving them wrong and does work then in their favor.