The Natural Philosopher wrote:
I thought I would start a new thread..because having found the data on the
Tzero, it bears a bit more discussion.

http://www.acpropulsion.com/ACP_Bib_results.pdf

They got - at an average speed of 50mph - a figure of 217Wh per mile

Now I accept that they were probably driving in the sort of way that those
idiots trying to 60mpg out of skoda diesels drive..but its still a data
point.

That means to achieve 500 miles range they would need just 10KWh.

As AJH pointed out, its 10x that, which takes you upto 3 mill per car.
Thats why I'm not buying one!

You said fuel economy was comparable, but you neglected the main route
of fuel consumption: not road fuel, but the fuel used in production. To
explain. Why do the batteries cost so much? The answer is because it
takes a huge amount of energy to get them produced. (That includes
production of the materials the batteries are made from.) While its not
exact, cost is a rough guide to energy use. If something takes me 1000
barrels of oil and 6 months to make, its gonna cost. The 6 months means
6 months of supporting a human being, and that comes down to energy. We
need money to buy energy firectly, and money to buy things that took
energy to produce, eg food, clothes, etc etc.

In short, the whole electric car system is energy hungry. It thus has
nothing to offer over fossils.

Its very hard to beat fossil fuel because it is so very available, in
such huge quantities. Its cost is therefore relatively low.


NT