USCAR has published a whitepaper expressing interest in accelerating the availability of mobile hydrogen (H2) fueling solutions to support development vehicle testing and early deployment of medium-duty (MD) Fuel Cell Electric Vehicles (FCEVs) at customer sites. USCAR requests assistance from the H2 infrastructure industry, the Department of Energy (DOE), and other stakeholders to accelerate the development of 700 bar mobile H2 fueling stations. H2 infrastructure funding sources and development efforts should be initiated to include mobile H2 fuelers for MD FCEV fleets.