I used to have a lot of slot cars as a kid but we lived in a small apartment and it used to drive my mom nuts having that stuff underfoot. I wasn't able to hang on to the sets. Here I am 50 some years later and the bug has got me again. I started out with a 4 lane set and have been adding (length) to it. It is still evolving, I have more track on the way. Eventually I will have proper supports under the raised sections but just to get things going I had to improvise a bit, that's why it looks a bit sloppy. Here's what came out of the box, in the second picture I added a bit of extra track (and a banner on the wall).