Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Natural gas has been proposed as a possible “bridge” fuel to eventual use of hydrogen in zero emission fuel cell vehicles. This literature review explores whether the natural gas system might help enable a transition to longer-term use of hydrogen in transportation. Two transition strategies are reviewed: adapting natural gas refueling infrastructure for future use with H2 and blending renewable hydrogen into the NG system.