We have this a flexible road for rolling cars. IIt’s name is Zip Track (really similar to a zipper) or Build-A-Road. There should be some additional structures – bridges, sidings or tunnels to create a full-fledged route. But we bought it used some time ago, so we don’t have these elements. However, this is not an obstacle for playing – the children themselves make all the necessary improvements. Our bridge is from a labyrinth for marbles, and the tunnel is Playmobil. Thanks to its great flexibility, you can invent any route option – straight, curved, round. The track is assembled from identical parts that are tightly fastened together, and the gaps do not interfere with the nimble movement of the cars.
Never saw these things. Thank you for posting!