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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Perhaps, however, the most effective coach of all is staring back at you from the bathroom mirror every morning, at least in the view of another business school, the Desautels Faculty at McGill University in Canada.

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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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