Those sparks under an F1 car aren’t a crash. At 200 mph, the wings and the floor push the car down so hard it gets squashed onto the track, and the titanium skid blocks set into the plank under its floor scrape the road. Tiny bits of titanium tear off and burn white-hot. F1 switched to titanium in 2015: lighter than the old tungsten, and much brighter. The catch: the plank starts out 10 mm thick and must still measure at least 9 mm after the race. At the 2023 U.S. Grand Prix, Lewis Hamilton and Charles Leclerc were both disqualified for wearing theirs too thin. Both of those helmets are on posters in the Mach 9 shop: mach9.company/shop #f1 #formula1 #motorsport #engineering