I have mentioned on here before and despite having been jumped on for how dumb my idea is I will mention again it would be relatively simple to use the signal from the brake lights to control a duct or turn on a fan. The duct/fan could operate for a set time since the last time the brakes were pressed and then shut/turn off. Why duct, blow, or scoop air to the brakes all the time when it is only needed when they are being used?
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