Upgraded cars, rules tweaks and one team to catch - Q&A on Formula 1's return

Formula 1 returns from a five-week break at the Miami Grand Prix, the first race since the Japanese Grand Prix on March 29, after the original 24-race schedule had gaps due to the cancellation of the Bahrain and Saudi Arabian rounds. The Miami GP Sprint weekend is being described as the start of a 'new championship,' with car upgrades expected across the field as teams look to close in on Mercedes. Sky Sports F1 will broadcast every session live, with practice at 5pm and Sprint Qualifying at 9.30pm on Friday.