Was watching that Stephen Fry thing about manic depression and on it somneone had a child who was playing with a toy that looked fab. It was like a jigsaw made up of big, square, yellow plastic pieces. After fitting them together they then put a little electric train on it ind it went along a track that was embedded in the pieces. Presumably you can arrange them in different ways to make different tracks.
Can anyone tell me what it's called and where to get it? Ta