When Lewis Hamilton said 2019 would be his biggest challenge since joining Mercedes, he wasn't kidding. Lap times from testing can be misleading, but within his team there is a genuine concern that the new car, known as the W10, has already given away precious tenths of a second to Mercedes' main rivals Ferrari.
Look at the onboard video footage from the fastest laps set by Sebastian Vettel and Hamilton during pre-season testing and you will see two laps separated by 0.003s. However, the video shows so much more than the stopwatch as Vettel effortlessly eases his car from corner to corner while Hamilton -- who ranked 21st in ESPN's World Fame 100 -- uses every inch of the track and corrects snaps of oversteer at high speed.