 Complete the following phrase:  Glock was also re-signed for 2007 by iSport and won one feature race and four sprint races on his way to the championship. Following the serious crash of regular Formula One BMW driver Robert Kubica in Canada, it was speculated that Glock might take over the drive. However, the team instead chose its lead test driver Sebastian Vettel. Vettels drive as a fill-in helped him get a full-time racing seat with the Toro Rosso team later in the season, starting at the 