Having adequate dedicated space seems to be one of the biggest issues facing slot car enthusiasts. I have a garage for my 8' x 16' setup, but it has to be on 4 different tables so that I can break it down after a couple of days of my wife parking in the driveway. So while I have a pretty ample...
This is one way to have more than one track in the same place,https://www.youtube.com/watch?v=SHfnGqExtfs
A very complex pulley system but it looks like it works & a great piece of engineering.
Worth a look at although the dogs are a bit annoying!