Someone Somewhere wrote:
On 04/07/2017 13:56, Basil Jet wrote:

Toilets in a "Tube" train!

https://www.youtube.com/watch?v=yTdrtRmSUO0


They did mention it 30 seconds before the end, but I wonder how easy it
will be to transition between carriages - D stock could be quite bouncy
- to use the aforementioned facilities, or were they planning on one per
carriage (which would substantially lower the passenger carrying capacity)?

The toilets can only be fitted in trailer cars, so two-car trains won't
have any, and three-car trains can have one.