Technology is not quite there, but headed in the right direction. By Chris Gillis Could the U.S. trucking industry's hundreds of thousands of trailers be used as platforms for solar electric-generating panels? That's what industrial designer and solar power specialist Jason Hill recently pondered. 'It comes down to how do we make an even bigger dent in our energy consumption?' Hill said in a recent interview. 'Using the space on top of a truck trai...