Comfort and Convenience
Power folding mirrors act on the mirror housings themselves, pivoting them inward against the door on a motorised hinge. That narrows the car's width in tight garages and reduces the chance of a clipped mirror on a narrow street.
Safety and Driver Assistance
A driver's airbag only deploys once an impact is already under way, cushioning the head and chest against the wheel. It cannot shorten stopping distance, so adequate following distance remains what prevents the collision itself.
Multimedia and Connectivity
An AUX input carries an already-decoded analogue audio signal into the amplifier, so the connected device handles track selection and volume itself. Playback reaches the speakers, but the head unit does not browse the player's library.