In article ews.net,
Doctor Drivel wrote:
Waiting at a traffic lights with the running engine, the efficiency of a
petrol engine is 0%

In practice not if it's running air con or heating.

When an electric car is at the traffic lights it is at 100% efficiency.

In practice not if it's running air con or heating.

BTW - love the idea of a stationary car being 100% efficient. So a car
with no engine at all is 100% efficient...

--
*Beauty is in the eye of the beer holder *

Dave Plowman London SW
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