In this May 22, 2012, file photo,professional test driver Dave McMillan demonstrates the dashboard warning signal in a Buick Lacrosse at an automobile test area in Oxon Hill. The government is speeding up research on safety systems that automatically prevent drivers from operating their cars if they are drunk or aren't buckled properly. Officials also said on Nov. 14, 2013, that they expect to decide by year's end how to encourage automakers to make available in more cars some special safety systems already in certain high-end vehicles. Those systems warn drivers before a collision that they are about to run into another vehicle, and can brake automatically to avoid a crash or make it less severe. (AP Photo/Susan Walsh, File)
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