As far as I know F1 cars still (oddly) have that wooden plank underneath.
In F1 history there was that famous plank disqualification in ‘94 where Schumacher was disqualified because his plank ( 1 cm ) wore more than the allowed 10% ( 1 mm ).
Is this rule still enforced? If so how does the constant bouncing not wear the plank beyond the allowed limit.
If not, why is the wooden plank still there in the first place?