I found this on the "Oddball Facts & Figures" page
Sounds interesting !The 1996 Lotus Elise roadster became the first road car to use aluminium disc rotors. These rotors (which uses silicon carbide reinforcement) weigh about half as much as cast-iron equivalents and boast better thermal conductivity. The major down side is the high cost. In Australia, a joint research project between Disc Brakes Australia and Cyco Systems Group is investigating using a cheaper and more durable aluminium-ceramic composite rotor for normal road cars.
Can you give us a more thorough run down on this technology !
and what we can expect in the marketplace in the future