I will not ride alone in a cab with a male driver unless I have my hand gun with me. And my hand will be in my purse with fingers on the trigger. I have had too many close calls to do otherwise. Men who consider a female-only livery service such a bad thing should consider that women who have had negative experiences with men are not going to be tolerant of any threatening or questionable behavior by a male driver. A lot of situations that could turn dangerous (or if not dangerous at least job jeopardizing) could be avoided if women have an option of not being forced alone with a man.