The clock is ticking for some of Formula One's big name drivers, with world champions and race winners out of contract at the end of the season and a restless young generation eager to take their places.
Briton Lewis Hamilton stormed to pole position at the German Grand Prix on a mixed Saturday for Mercedes, whose misjudgement left last week's Silverstone winner Nico Rosberg 11th on the grid for their home race.
Fatherhood has changed Sergio Perez's life since the end of last season and the Mexican hopes the coming year in Formula One could be just as transformative on the track.