My companion asks the boy selling Vitamin C, who is helping to move my car, to push in the side mirror.

NEWYORKER: Baptizing the Gun

When a wired car is in the blind spot of one of GM's test Cadillacs, an icon of a car lights up in the side mirror.

FORBES: Car Talk

The systems basically work the same: a series of cameras, lasers or infrared sensors integrated into the car (on the back side of the rear-view mirror, in the bumper or behind the windshield, for instance) monitors lane markings in the road.

FORBES: Cadillac Has A Backseat Driver I Can Live With