I am not pooh-sized, however I had a recent experience with having too much room in the back seat. There are 3 seats to each "car". The 3rd one has alot more room than the other 2. I'm 4' 11'' and I had to hold on for dear life. I was tossed all over the seat. I never had a problem before, but I always sat in one of the 1st 2 seats and dh sat in the 3rd. So there is definately more room in the 3rd seat, as far as how much, I don't know.