"tim......" wrote:
wrote in message ...
http://www.dailymail.co.uk/sciencete...ditioning.html

what's all the bolliox about no connecting door, like Siemens have just invented this.

Other countries have had this for ages

Yes, but they've never been available on our small diameter Tube trains.
You need articulated trains to make it possible with narrow body shells. Of
course, it's much easier with full-size trains, even without articulation,
which is why the
S stock and 378s have them.