premise: Sebastian Vettel is a person.
hypothesis: Sebastian Vettel ( [ zeˈbasti̯an ˈfɛtl̩ ] ; born 3 July 1987 ) is a German racing driver currently driving in Formula One for Scuderia Ferrari . He is a four-time Formula One World Champion , having won the championship in , , and with Red Bull Racing . Since he is one of only four drivers to have won four or more drivers ' titles , he is among the most successful F1 drivers of all time . The following year he went on to become the youngest driver ever to win the World Drivers ' Championship , aged 23 . He followed up his first championship with three more titles , becoming the youngest double , triple and quadruple world champion in Formula One .