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Time we went back to steam, then. All a steam engine needs is a heat source and water and doesn't care what's generating the heat (coal, wood, hydrogen, uranium). Modern designs minimise the water waste and it should be possible to design good engines where the heat source is replacable.
Problem with the internal combustion engine is that its design and performance is so closely tied to the chemical properties of the fuel.
itsbruce
mespilus
JWestland
Prices ARE going down for e-vehicles, though they are out of my reach atm but
-ensuring leccy is also green
-cost of scrapping perfectly good cars (I get another 5 easily out of my 10 year old clunker)
all need to be taken into account. It can be a ambitious necessary goal or a mostly fuck-up, depending on implementation...