This so freaks me out. We are just one step short of giving machines self awareness. And once that is done, God save us all. Of course unless you are a freak who dreams of stepping into Keanu's shoes in his Matrix role; in which case even the almighty wont be able to save us. The LS600hl features a driver monitoring system which keeps an eye on you, literally.

This is done by means of a camera fitted into the steering column. Once it detects that you are distracted, it alerts you with sound and lights to warn you of obstacles. In case you still dont respond, the system starts applying brakes.

The system even prepares the brake system for a more powerful effect and re-programs the steering ratio, amplifying the intensity and quickness of the steering response.

Source