Comfort and Convenience
The on-board computer reports values such as consumption and range from sensor readings and recent averages. Those figures describe what has happened, so they shift after a change in driving style rather than predicting it.
Safety and Driver Assistance
The driver's airbag only deploys once a crash is already under way, cushioning movement toward the wheel. It shortens nothing in the distance needed to stop, which following gaps and braking still have to provide.
Multimedia and Connectivity
Bluetooth is paired once: the phone is made discoverable, selected on the audio system, and a code confirmed. After that it reconnects automatically, carrying calls and audio through the speakers without a cable.