Questions have been raised about Ferrari's new 'Halo mirror' concept.
Sebastian Vettel says the repositioned mirrors are purely for visibility purposes, but the solution also includes extra winglets.
Pushing the limits
"I think it's a great idea." "They're really pushing to the limit," Force India technical boss Andy Green told Auto Motor und Sport.
FIA race director Charlie Whiting was spotted in the Ferrari garage taking photos of the controversial part on his phone.
But Renault technical boss Bob Bell said: "We're working on something too. I think all the teams will be."