>So having ships, planes or even cars powered by burning iron seems to be unfeasible aluminum of course. It is cheap too and has higher specific energy than ir

>So having ships, planes or even cars powered by burning iron seems to be unfeasible aluminum of course. It is cheap too and has higher specific energy than iron. Using aluminum-air fuel cell instead of burning makes the efficiency about 2 times higher. The actual cars powered by aluminum have range up to 2000km per refueling.