One thing that I noticed dating back to the Audi R18 '17 scale model is an opening up of the shutter panels above the radiator intakes on all the current LMP1 factory cars. I thought that the ACO had rules that mandated that something like them be there for legality reasons, or there was some benefit to using them. But since that Audi scale model showed up, those panels have disappeared on the Toyota and Porsche.
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