Or not being able to get a cab because you're going to a place they don't want to drive (it was way more common in NYC before Uber for a cabbie to ask where you

Or not being able to get a cab because you're going to a place they don't want to drive (it was way more common in NYC before Uber for a cabbie to ask where you're going before you get in), or the driver doesn't like something about your look (clothing, group, color, etc), etc.