Say you&amp;#8217;re the picky sort. (Of course, you&amp;#8217;re not &amp;#8230; right?) You need a ride to that fancy party tonight, but you can&amp;#8217;t just show up in a cab. A limousine&amp;#8217;s too expensive, but you want a private car and a professional driver. You don&amp;#8217;t have a big wad of cash in your wallet, and [...]