I had one almost exactly like that one...and wish I still had it.
If it is like the one I had you will need to do some modifying to get 4 1/24 scale cars on a shelf but 4 1/25 scale cars should be no problem. You might have to do some form of way to keep the models from shifting when the thing spins.
In my younger days I always had more than enough beers on hand to last an Armageddon. At one point I had a 73 Camaro SS RS. When I popped the hood my first thought was "I could fit a "2-4" (Canadian term) between the rad and the grill.
That's when I started to think that I might have a drinking problem.