On 13/08/2014 18:54, harryagain wrote:
"The Natural Philosopher" wrote in message
...
....
Sticking titanium shoes on a carthorse is all very well, but it still cant
draw a 4,000 tonne train.

A diesel engine can.


When there is fuel to run it.

Which there always will be. We already have the technology to
manufacture it from waste products, water and sunlight. It is only that
it is not economic to do so at today's prices.


--
Colin Bignell