This part though, does have me a little worried in regards to F1 and their new designs:
https://www.racecar-engineering.com/art ... odynamics/
On the lift-off safety front, NASCAR evaluated the vehicle in CFD before testing at the Automotive Center for Excellence (ACE) in Oshawa, Canada and the Chrysler Technical Center’s Aero Acoustic wind tunnel in Auburn Hills, Michigan. The Next Gen features the passively deployed bonnet (hood), and roof flaps NASCAR uses in all its vehicles, but the diffuser presented a new opportunity to add another safety device – a diffuser flap. This is held in place at the centre of the diffuser and, when deployed, releases downward and blocks the central tunnel of the diffuser. This creates a low-pressure region behind the flap and increases the lift-off speed of the car when nearly backward by 10-20 per cent. The flap was originally designed to operate via a pressure base deployment system, but it was found to be much more effective to deploy the diffuser flap via mechanical release connected to the right-side roof flap by a flexible cable. Overall, the path of development for the underwing was aggressive but successful, thanks to the strong correlation between CFD and the wind tunnel.