The profitability will come when we factor in the environmental damage in the prices.
However the elephant in the room at least for aviation is that the energy per kg is about 50 higher for kerosene than for lithium batteries. A very large part of an airliner is fuel already. 50 as much? Not gonna happen. This will remain a really short range thing unless a really amazing breakthrough happens.
However the elephant in the room at least for aviation is that the energy per kg is about 50 higher for kerosene than for lithium batteries. A very large part of an airliner is fuel already. 50 as much? Not gonna happen. This will remain a really short range thing unless a really amazing breakthrough happens.