What if you went to start your car and Apple Watch stopped you?
Yes, Apple Watch, with your permission, knew you had spent time at a bar, monitored your heartbeat and other physiological data and saw changes indicating that you had been overdrinking.
When you walked to your car, it connected to the CarKit-powered entertainment system, understood your situation and disabled the car’s Start button. You used your Apple Watch to call an Uber instead.
Or, you’re leaving work instead of a bar. Your device connects to your car’s stereo system and, based on your elevated stress level, starts playing your favorite relaxing jams.
It’s almost possible.