Comfort and Convenience
The start-stop system cuts the engine when the car halts and restarts it as the driver releases the brake; the dashboard switch disables it for the rest of the trip.
Safety and Driver Assistance
ABS modulates brake pressure many times a second to keep wheels rotating, but grip still sets the rate of deceleration, so the gap ahead decides whether that rate is enough.
Multimedia and Connectivity
The USB port carries digital audio data rather than a finished sound signal, so the head unit reads the files from a stick or phone and decodes them itself.