McLaren will run Callum Ilott in an IndyCar test this week as it seeks a substitute for injured driver David Malukas.
Charles Leclerc is "fully on board" with Frederic Vasseur's vision for Ferrari as the team principal begins his second season in charge.
When F1 field hit the track together on Wednesday many will be hoping to see signs of a more competitive championship ahead this year.
The Le Mans 24 Hours organisers have announced an expanded hypercar for this year's race and confirmed Moto GP champion Valentino Rossi will participate.
Lewis Hamilton's impending move to Ferrari could trigger problems within his Mercedes team this year, rival Sergio Perez has predicted.
Lando Norris worked on improving his consistency during qualifying laps in McLaren's simulator during the off-season.
In the round-up: Ferrari to observe rivals before deciding upgrades • Pin's F1 Academy livery • Bilinski takes FROC title as Sceats wins NZGP
