Seat belts could, in the 100 milliseconds of a crash, avoid breaking an old lady's ribs by calibrating how much force to apply to a body after gathering sensor data on the car's speed and deceleration and the weight and position of the occupant.
This can then move through weather, music and map programs, which are all integrated into the car's touchscreen, while an overhanging motion sensor will also detect where your hand is headed.
The same goes for the mass air flow sensor, which calculates the amount of air coming into the car and determining yhow much fuel to shoot into the engine.