At this point, it cannot be fairly characterized as anecdotal that taxi drivers routinely a) demand more than the regulated rate (&quot;tipping&quot;); b) refuse service to persons of color, with disabilities, and with undesirable destinations; and c) decline credit cards despite bearing the processor&#x27;s trade dress.<p>(That&#x27;s just the US, though, can&#x27;t speak for France, not having researched the market there.)