I remember my Brother was playing with them (He was bron 1998), they was really popular in the 90's and the beginning of the 2000's . He had a lots of fun with it, and I'm sure, you had fun with it, too. I always played together with my small Brother there, he had a lot of cars, a big collection.
It was really funny, you could invent so much stories. My Brother always hated when I played with my Barbies there, too. He had his cars, I had my Barbies.
Nowadays, I don't see or know any child which plays on these rugs. Are they out? It's really bad if this should be, cause I hate when childrens play only with the new stuff like: Tablets, Computers..... Why does a Child needs technology?
He needs to go out and play with his friends, he should be really dirty, play in the mud, eating sand ... somethin like that I know ;'D ...! That's a real childhood...
Why so hygienic? A child needs to "Work off" ;) !