&gt; The &quot;driving&quot; component of getting from point A to point B in a safe manner, without making incompetent U-turns, etc is the baseline. The tipping isn&#x27;t for that.<p>That&#x27;s how it <i>should</i> work, yes, but once tips become an option, tipping culture takes over in awful ways.  Consider that the expectation in US restaurants is a 10-15% tip at minimum, for baseline competent service, and anything less suggests that your food came with extra saliva.  That&#x27;s not a healthy process.