On Tue, 20 Dec 2011 13:49:49 +0000 Bill Wright wrote :
All this does is avoid a small amount of pollution in London at
the cost of causing a lot of pollution in the countryside.

"The average speed [of a London bus] is about 8 kilometres per hour
and a bus stops on average every 150 metres, at traffic lights, bus
stops ..." [Volvo], precisely the operating regime where a hybrid
is going to work best. And the fact that pollution is generated
away from population centres is a benefit - air quality was an
issue where I used to in SW London.

But for the same reason that the Prius offers nothing for motorway
driving, buses like this would have nothing to offer outside major
conurbations.

--
Tony Bryer, Greentram: 'Software to build on',
Melbourne, Australia www.greentram.com