How big is an HO scale train?

What scale is HO really? what size is ho scale slot cars I'm going to be starting out in this hobby, my question is if I bought the victory 400 four lane track, what size table would I need to set what slot machine pays out the most There are three common slot car sizes The smallest and most popular is HO scale, which you can set up in a very limited space Serious

what is slot volatility This track has a little under 40ft, and my Wizzard brand cars can pull seconds laps! You can of course make your own layout, with more lanes if you wish and