Yes, Reminds me of the Bike Friday trailer offerings, the suitcase And,
a 'Rubbermaid' cargo box one , sold by Alan's son.

when I got a Brompton, I was attracted to the Carry Freedom City trailer.
it all folds within it's frame, without loose parts, and has little wheels on the back edge to ease its going in between seat backs on trains.
Folded bike can be transported on the trailer..