[bluGill]

battery only buses make sense because the bug needs to run over rush hour and then can sit all do to charge. Battery operated tractors do not make sense without vastly better batteries because a tractor needs to run for 16 hours at max power (500hp). Sustaining 400000 kw for 16 hours is not easy. For semis and airplanes you need to consider your use: for short in town loads/short flights batteries can work, for longer distances we don't have the battery technology today to make it work.

Someone once told me battery technology has 2-3 more doubling left and then we hit chemical limits and cannot get more out of them. If this is correct batteries can never do the longer distances, but I don't know if it is correct.

[petre]

> battery technology has 2-3 more doubling left and then we hit chemical limits and cannot get more out of them

We still have energy cells which are essentially bateries that you charge by pouring in some fluids just like in a regular car. However the tech is not mature enough yet.