Container Caboose

[60103]

I saw a brief mention of an attempt that British Railways made to put a Guard's Compartment (Caboose to the North Americans) in a container to be put at the back of container trains.
It was (I think) made of concrete and totally unsuccessful.
I think this would be a fun item, so I'm soliciting ideas for how it would look and what features it should have.
Does anyone have more information on the prototype?

 

[alkcnw]

I never heard about this, one question, why would they make it out of concrete????????

 

[60103]

"All I know is what I read in the newspapers."

I think that's what I read.
British railways (esp. the Southern) liked concrete castings and made sheds and fencing out of them. It may have been to get more weight to make it more comfortable? for the crew.