I’m kind of stunned – I wonder how it looks on the racetrack. wrt the structure and safety, the LED’s, battery, and wiring are probably pretty tiny, so it could just sit on top of the outer functional layer, and it wouldn’t be too expensive to crash-test the whole set-up. I think I read that the diamond helmets were for show only, because to use it in a race, they would have to be strength tested diamonds and all.
That’s awesome. People knock Vettel for his antics, all the helmet designs, the dreaded finger, but at least he feels comfortable enough to show off his personality. It adds a bit of character and light hearted fun to the series. Plus LEDs are just cool. They are already set to be the future of every conceivable type of lighting, but for someone to stick em on a helmet is definitely inspired.
From what I saw in FP2, the LEDs are on top of the helmet and then the top design is a layer of vinyl (or similar) which goes over the top of the LEDs. The top of the helmet was bumpy so this clearly has no effect at all on the structural rigidity.