6 cameras: 2x diffuser/ rear end plate looking forward, 2x front wing looking backward, and 2 in the wing mirrors.
If some get broken off the car still has more to see the tyre and white line.
Any system that is external to the car will be impraxtical and expensive.
There is survailance then physical punishment.
The cars can be slowed or tyres worn down with some kind of slippery/abbrasive/ off camber belt following the track.
On another note. I think the severe tyre waear was helped by the artificial aging process. All it did was blast away the bitumen from the asphalt leaving clean and sharp edges from the gravel/shingle which cuts up the tyres.
Maybe the promoters can buff the track to cut the edge off.