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Much like the McLaren F1 from the 1990s, gold foil is used around the engine bay for thermal management. The rear engine cover is made of polycarbonate to reduce weight. I probably stared at this car for a good 10 minutes; you should go visit the museum and do the same.
A design review was being conducted on student projects. The museum has a relationship with the ArtCenter going back more than 20 years. and you can watch the students in action in the design studio.
The other McLaren on display is the all-mighty hybrid hypercar P1. I caught one in the wild at Cars & Coffee a number of years a back.
One detail I missed from before were these six bumps on the underside of the upper surface of the air channel in the door. My guess is they are to help airflow stay attached to the upper surface and reduce drag. It’s just a guess though.
The actuators for the active rear wing are massive to handle the downforce loads.