In this March 26, 2015, photo, Sean Hunter tests gas welds on aluminum while working on a 1935 Rolls Royce at Pennsylvania College of Technology in Williamsport, Pa. When Penn College of Technology revved up its vintage vehicle restoration major in 2012, it became one of just a handful of degree programs around the country teaching teens and 20-somethings how to help refurbish and maintain North Americas fleet of more than 10 million classic cars. (AP Photo/Ralph Wilson)
