Hydrolox will always be a more efficient fuel, but it's a nightmare to store and manage, and destructive to engine components, fuel lines, storage tanks, and, w

Hydrolox will always be a more efficient fuel, but it's a nightmare to store and manage, and destructive to engine components, fuel lines, storage tanks, and, well, everything it touches. It may be tough to have a reusable hydrolox rocket that's efficient from a total cost of ownership perspective.