In message
.
net, at 09:27:48 on Fri, 27 Apr 2012, Neil Williams
remarked:
They are both "public transport" which helps dissuade people from driving
their own cars into cities, have to find somewhere to park etc.

They do not have a congestion or environmental benefit in the city itself,
though.

Yes they do. Taxis will typically be used only once you've arrived in
the City Centre, thus relieving the suburbs of your presence. They also
don't need parking spaces while you are inside having your
meeting/dinner.

And I don't think anyone's mentioned the drink/driving aspects yet.
--
Roland Perry