Physorg: Car manufacturers aspire to create hydrogen-powered vehicles that could one day allow energy-efficient, cost-effective travel that emits no greenhouse gases or other pollutants. To further that effort, scientists at the U.S. Department of Energy’s Argonne National Laboratory have devised new combustion strategies for hydrogen engines. Researchers in Argonne’s Center for Transportation Research have built the Modular Automotive Technology Testbed (MATT), an Erector Set-like platform …