On 06/10/2013 12:34, 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

tim

First saw it on Berlin U-Bahn's U5, a.k.a. the East German line, in 1999.