On 2006-Aug 06, at 03:44hrs AM, Vitaliy wrote:

James Newtons Massmind wrote:
> Another interesting thing is that sustainability = cheap. If you think
> about
> it, the bulk of the cost of just about anything is the energy used  
> to make
> it. Think about a new car: You can buy a H2 or a Prius... Or an old  
> Civic.
> The new cars are going to require that someone dig up ore, smelt it,
> transport it to the factory, cast, weld, form it, assemble and then
> transport the finished car to me. The old civic is already here.

Alternatively, you can melt a couple of old Civics to make an H2.  
This way,
you don't need to worry about digging up the ore.

> Compare the
> cost of that new hybrid with the cost /difference/ between the gas  
> my old
> civic will use compared to the new hybrid. [...]

I remember a while back one of the presenters at the local SAE chapter
meeting mentioned that storing the braking energy as compressed air  
achieves
up to 70% efficiency, compared to only 20% for batteries. I do not  
recall
the reason why hybrids are still using batteries. Safety? Difficult to
achieve smooth acceleration?

^ Fear of a technology looking stupid if it does not work in the  
field. AGSC ^

Best regards,

Vitaliy

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