Thanks all.
Yes, lot of fun.
The entire table with the paint was under $50.00 to build. If you catch a sale, even better. The carpet was a "end of roll" half price special.
I used 1x6 for the outer frame and it has worked just fine to help keep the cars table bound.
As this photo shows, the table is light enough for my grandson and I to easily lift and store on top of the original table area we had it set up on.

So now it's out of the way and we have more elbow room in the Skunkworks.
It also means it's easily moved outside during race events. That area is where we usually store all the slot boxes. Now we can have to space back and have a track outside on the deck as a bonus :)