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Photo by: Stephan Savoia

U.S. Transportation Secretary Ray LaHood is shown the new Driver Alcohol Detection System for Safety (DADSS), one of the prototype components, a small black box attached to wires, seen at far right, during a news conference announcing the device in Waltham, Mass., Friday morning, Jan. 28, 2011. Shane Karr, vice-president for Federal Government Affairs at the Alliance of Automotive Manufacturers looks on at right, as Laura Dean Mooney, national president of Mothers Against Drunk Driving (MADD) watches at left. (AP Photo/Stephan Savoia)

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