So how does the company verify that their drivers or passengers are actually female as opposed to wannabees or not people who are cross-dressing with evil intent? This does not even begin to address the discrimination problem. I get why they might want to have female only drivers and customers, but also see a whole host of other problems.
What about a white guy who self identifies as a black women who is a lesbian that likes to crossdress and act like a white guy?
You're right. I imagine this company has consulted attorneys and received guidance on how to set their policies. Of course, in our crazed society today, freedom of association is no longer permitted; if it were, none of this would be a problem.