Some commentators believe that hydrogen fuel cell cars will never become economically competitive with other technologies or that it will take decades for them to become profitable.
儘管燃料電池車目前已上市，一些专家认为燃料电池汽车将永远不会成为与其他技术相比具经济竞争力，或将需要几十年来让它们变得有利可图。