Comfort and Convenience
Pressing the cigarette lighter in holds it against a catch while a coil heats; it springs back out when hot, so the release is the signal rather than a timer, and the ashtray gives the ash somewhere contained.
Safety and Driver Assistance
ESP works on individual wheel braking to correct a skid the driver did not intend, whereas ABS acts only during braking, releasing pressure so a locked wheel keeps turning and steering stays available.
Multimedia and Connectivity
Audio preparation covers the fitted wiring, speakers and aerial feed that a head unit plugs into, while the USB connection is an interface on that system for carrying audio files and data from a device.