In audi's case, the cars were recalled to move the throttle and brake pedals farther apart and then to install interlocks that prevent shifting out of park unless the brake is applied. In Toyota's case, the recalls involve new floormats, modifying the shape of the throttle pedal where it is closest to the floormat, and installing what looks like a shim in the pedal assembly that reduces the contact surface of a guide mechanism. Toyota is also modifying the ABS software on the '10 Prius. There is no recall for any electronic issues in the throttle system,
AFAIK.