Jochen Rindt
... that Jochen Rindt is the only driver to win the Formula One World Drivers' Championship posthumously?
... that <b id="mwCsw"><a href="./Jochen_Rindt" id="mwCs0" rel="mw:WikiLink" title="Jochen Rindt">Jochen Rindt</a></b> is the only driver to win the <a href="./List_of_Formula_One_World_Drivers'_Champions" id="mwCs4" rel="mw:WikiLink" title="List of Formula One World Drivers' Champions">Formula One World Drivers' Championship</a> posthumously?