Saw that a few weeks ago.
Not convinced I like the concept of a 'rideble pram'. I think a bike with a detachable pram would suit more ppl. (But then, perhaps not?)http://www.triobike.co.uk/
There's another like that - similar concept, but I can't remember the name.
Still - if it reduces car use (or even allows a household to drop a car), I'm all for it.