[SaveFerris]

What about steam-powered airplanes? Just bring enough wood on the airplane to keep the fires stoked.

Or, everybody in the back could just pedal a bicycle hooked to generators to charge up the batteries.

Fly and exercise at the same time. You have great incentive to keep pedaling. That Los Angeles to Sydney route can be rough, though.

[Ozark Tom]

Samuel Pierpont Langley tried steam engine aircraft on the Potomac.