Originally Posted by
foxmoth
I know someone involved in electric aircraft and he was telling me that battery technology is currently developing at the same rate as computers were 20 years ago.
For a long time computing speed data capacity and price were all improving by about double every 18 months.
They might conceivably be able to gain battery breakthroughs by a factor of 10 or so from here to an unknown point in the future, using some nanotube discoveries or whatever, but multiplying battery performance by 10,000 in 20 years seems a bit improbable.