Matthew Carter (ex-team principal of the latter-day Lotus F1 team) has an anecdote that the team had a wing component that held the wing in a legal configuratio

Matthew Carter (ex-team principal of the latter-day Lotus F1 team) has an anecdote that the team had a wing component that held the wing in a legal configuration, but was designed to break under racing forces. When it (inevitably) broke, it allowed the wing to flex into an illegal (but more performant) configuration. Since F1 has a rule that allows exceptions to illegal car configurations if they are due to damage, they were able to pass inspections by saying that the illegal configuration was due to the (intentional) damage.