To answer your other questions, the CC is on the engine Control Area Network (CAN). The CC switch is an input just as is the throttle position transmitter (which is in the engine compartment on the bulkhead just in front of the brake master cylinder). The ECU converts that information to an output signal to the electronic throttle actuator (which is on the back side of the intake manifold).

The steering is conventional, recirculating ball with hydraulic assist.