 Complete the following phrase:  Pirellis medium-compound tyre made its race debut in Valencia, which once again saw Vettel on pole. There was much speculation about the potential for the field to be shaken up by the introduction of engine mapping bans, but the reigning champion led for most of the race, ceding the lead only when called in to pit. He comfortably gained his sixth victory of the season when the leaders moved onto the medium compound tyres, with second-placed Ferdo Alonso demonstrating that the Ferrari 150o Italia was unable to use the medium tyres as efficiently as the Red Bull RB7. With all twenty-four cars finishing the race, Hispania Racings Narain Karthikeyan became the first man in the sports history to finish a Grand Prix in twenty-fourth position as the race broke the record for the most classified finishers; the 