Could fuel-cell conversions help clean up long-haul diesel trucking?

Cummins FCEV Class 8 SemiIn addition to building new zero-emission trucks, what if older diesel trucks were converted to hydrogen fuel-cell power? Two such initiatives were announced earlier this week. Daimler Truck North America and diesel-engine manufacturer Cummins will update older Daimler-built Freightliner Cascadia semi trucks with Cummins-supplied fuel-cell…