The Fokker F50 & Boeing 777 has a taxi-brake inhibit - that applies only a couple brake stacks while taxi-ing to inhibit wear -- IE it applies brakes on only a couple wheels - as opposed to all - IE to reduce the carbon/# of times applied theory- which Ive heard recently is bull-shiit.. You can buy kick-asss carbon brakes for your car now at NAPA & Performance Friction - outta California - & yes they work well they DO NOT FADE ! I put them on application were the brakes were marginal from the factory - like a Jeep Grand Cherokee or Ford Excplorer - Jag etc..