I think allow ground effect back in to F1 (if they want to be able to point to the technology), you could then make the top of the car as slippery as possible.
Or, wings parallel with the axle are banned.
OR cars are to be tested at 180mph and must be developing no more than 200 kg of downforce at that speed- use as many wings as you want, but none of them are allowed to be in any way dynamic.
I think allow ground effect back in to F1 (if they want to be able to point to the technology), you could then make the top of the car as slippery as possible.
Or, wings parallel with the axle are banned.
OR cars are to be tested at 180mph and must be developing no more than 200 kg of downforce at that speed- use as many wings as you want, but none of them are allowed to be in any way dynamic.