Dan M wrote: > > and you'll see what I mean. We know that the energy density of gasoline is > about 46 MJ/Kg. Compare this to the best, most expensive battery (Li ion), > and we get a factor of 100. Electric cars are more efficient (90% vs 20%), > so this gets down to a factor of 22 or so in power/weight. And, using the > highly efficient batteries has a cost, that's why the Tesla Roadster costs > Does it really matters? As long as the generation of energy is costly, batteries are irrelevant.
I saw with horror a story about a "green city" in Japan, where all houses were covered with beautiful solar arrays. Very nice, but each monstrosity cost 40.000 _dollars_. For what? Giving 200 dollars a month of green energy for the next 10 years? Alberto Monteiro the neocynical _______________________________________________ http://www.mccmedia.com/mailman/listinfo/brin-l
