Niki Lauda believes Formula 1 risks ruining its "DNA" if cockpit protection is brought into the sport.
Last time out at the Sochi circuit Red Bull trialled their aeroscreen to mixed reviews.
While most feel it is asthetically better than Ferrari's halo, there are those who believe F1 risks losing what makes it the sport it is.
One such person is Mercedes non-executive director Lauda.
"Whatever we do in the future we need to make sure we don't ruin the DNA of F1," the triple World Champion told Sky Sports F1.
"If we come up with cars where everything is covered, you don't see the drivers and you don't see the helmets, then we have to be careful.
"F1 today is safe."