Former Mercedes driver Nico Rosberg revealed at least two teams have put significant resource into poring over photos of Red Bull's floor design as they desperately try to close the performance gap.
The Red Bull cars have been head and shoulders above the rest so far this season. And one of the RB19's strongest weapons has been hidden where no-one could see.
But that intricate floor design, which forms an integral part of the car's aerodynamics, was shown off to all their rivals in Monaco. Sergio Perez crashed in qualifying and the tight streets of Monte Carlo meant the only way to swiftly recover the car was to hoist it up into the air.
