F1 returns and with it comes three practice sessions. The Circuit de Barcelona-Catalunya plays host to Formula One this weekend, and although teams know the track like the back of their hands, they could still do with gathering a lot of data from it with the new machinery. We already know Sebastian Vettel has a new chassis, and the aerodynamic nature of the circuit could take a small amount of the advantage away from Mercedes. Place your bets now then, as practice gets underway and drivers gear themselves up towards a good qualifying and an even better race.