John Rumm wrote:
On 18/10/2012 10:59, Doctor Drivel wrote:

"John Rumm" wrote in message
...

Couple that with a 60% CCGT power statin and you have around 50%
gas-to-wheel which is better than any IC engine will achieve.

Indeed - but given the lack of energy density of the best batteries,
still well short of liquid fuels.

You obviously have not heard of supercapacitors.

You obviously have a short memory. I mentioned that they have even
lower energy densities than batteries.

That can clawback ALL the kinetic braking energy and give it back out in
acceleration.

They claw back most of
the kinetic energy and give it off to accelerate.

That they are well suited to. But not the bulk storage of energy in
the first place.

But they improve the efficiency greatly in city driving which most car drive
in.

Shanghai is using
them now to run EV buses.

Which is irrelevant unless you want a car than needs a charge every
120 seconds.

It is not irrelevant It shows they work, even enough to propel a bus. They
can also be used for trains, charge at each station with kinetic reclaim as
well, and save the cost of expensive 3rd rail or overhead wires. Full
electric commuter trains are viable without full line electrification.
Overhead wires are ugly.