Lando Norris speaks out after Max Verstappen closes gap ahead of Qatar GP - Follow live F1 updates as the title contenders speak to the media ahead of the penultimate race of the season in Qatar

Every F1 car has a wood-composite plank (aka, skid block) on the underside. It’s there to prevent teams from running their cars too low to the ground, which would give them an aerodynamic advantage. The rules say you can’t wear it down by more than 1 millimeter during a race.