Aut cum scuto aut in scuto
That looks like an FIA approved pedal box. If you crash with your foot on the brake pedal and it is pushed backward because the firewall bends (or the master cylinder gets pushed backward) during the crash it will break your leg. The pedal box is attached to the floor pan which is much stronger so the chances of injury are reduced. Al_in_Ottawa
Coulda used this setup in my '72 VW Beetle
"Why 2 brakes?", asked the millennial hipster doofus.
So you can alter the brake balance between the front and rear brakes. Two brake cylinders and a balance bar between them.
This is from the Gordon Murray-designed McLaren F1. Even the pedals were branded with the F1 logo and the aluminum was anodized with McLaren-orange color.