now here's some BMW brakes...lol
http://www.itv-f1.com/News_Article.aspx?id=43660
seriously though, capture the kinetic energy for reuse...
infinite modulation, absolutely control...much easier to control an electric signal than a mechanical/hydraulic circuit...
ecu could control the throttle/brake in synch...driver steers and uses one pedal, the throttle
no heat generated, or at least much less...
I wonder what it looks like?
a motor/generator on the axle? or
or a rotor disc (like the brake disc) spinning thru a stator toroid/magnet...