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.

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All along the back of the house, broken mirror-glass lay glittering on the grass.

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Harry Atkins - known as Clutch - squinted in the mirror to check what the lads in the back seat were up to.

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He says lots of bankers asked him if he wanted to buy back the business, but that he preferred to look through the windshield, and not the rear-view mirror.

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