“adocs, have you ever asked a shaila from a posek or Rov whether the Halacha in the Shulchan Aruch we’re discussing, as well as the equivalent Rambam, are utterly meaningless and irrelevant in our modern day, with our era having replaced the anarchistic practices and rulings from the days of the Mechaber? No? I didn’t think so. So I’ll tell you what. Call a posek of note and ask him if a) the Shulchan Aruch and Rambam we’re discussing can be scratched out as irrelevant and to be ignored without any meaning for our times or b) the Shulchanch Aruch and Rambam remain relevant for us today and ought to guide our lives in some manner.”
Um, that’s not how shailahs work. You don’t call a Rav and ask him “Do I have to follow this Rambam?” You call a Rav and ask him “Can women drive wherever and whenever they want to, assuming the errand is not inappropriate, or does there have to be a special reason for them going out because it’s only bedieved?” and the Rav will give his answer based on his knowledge of Shas and poskim. Either he will pasken based on that particular Rambam, or he won’t. But you don’t ask the shailah on the Rambam itself.