U.S. Rep. Bill Shuster, the chairman of the House Transportation and Infrastructure Committee, left, speaks at a news conference in Imperial, Pa. about the ride he and Barry Schoch, secretary of the ... more 
U.S. Rep. Bill Shuster, the chairman of the House Transportation and Infrastructure Committee, left, speaks at a news conference in Imperial, Pa. about the ride he and Barry Schoch, secretary of the Pennsylvania Department of Transportation, right, took to the Pittsburgh International Airport in Imperial, Pa. in a self-driven vehicle on Wednesday, Sept. 4, 2013. The Cadillac SRX that was modified by Carnegie Mellon University, was operated by a computer that used inputs from radars, laser rangefinders, and infrared cameras as it made the 33-mile trip from Cranberry, Pa., Butler County. A Carnegie Mellon engineer was in the driver's seat as a safety precaution. (AP Photo/Keith Srakocic) less 
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Associated Press | Photo By Keith Srakocic
Wed, Sep 4, 2013 4:05 PM EDT