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| London Transport (uk.transport.london) Discussion of all forms of transport in London. |
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#8
September 17th 11, 11:23 PM
posted to uk.railway,misc.transport.urban-transit,uk.transport.london
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WCML classic service after HS2
On Sat, 17 Sep 2011 07:44:04 -0700 (PDT), 77002
wrote: On Sep 17, 7:39*am, "Peter Masson" wrote: "Andy Breen" wrote in message ... On Sat, 17 Sep 2011 15:21:58 +0100, Peter Masson wrote: "allantracy" wrote The future for cars looks very bleak unless they can be persuaded to run on electricity. Though there was a steam car around a while ago how ironic would that be? Battery technology can never be made efficient, Define the meaning you are picking for "efficient" in this context.. so even with nuclear or other renewable generation of electricity, battery cars can never be made efficient. See above. What do you mean by this? Cost? Energy density? Charge cycling efficiency? Lifespan? Charging time? charge cycle efficiency. The other issues can in principle be overcome, but the laws of physics will not let you charge and discharge a battery without significant energy losses. Are there not also weight, and size issues with batteries. Gasoline/ petrolium is fairly light and very efficient. A trunk full of batteries is heavy, even if we are talking about the recent battery developments. There is clearly something to be said for Electric/trolley buses. They are still very much in use in Boston, MA and San Francisco, CA. And Seattle, WA and Metro Vancouver, BC. |
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