I’m disabled and used to use rideshares a lot; I remember one time my ride pulled up, I nodded to the driver, got in the front passenger seat, and started a chat. I didn’t notice that he was missing an arm until he physically pointed it out to me, after talking about my visible disability. I laughed and apologized, feeling blind, and he assured me it was fine, apparently lots of people don’t notice. I am partially blind though, so at least I have a bit of an excuse :P