Oh Wow!!!!!!!!! Those were the days. We had a store that had a looooooong road track with all kinds of bumps & turns. All the turns were banked so we could use the speed and work to make the corners.
He had a drag strip on the other side of the shop. The guys ran all classes of cars. Some of the dragsters only got one run in because the motor burned up. Switching the motors out between runs was ALMOST as much fun as watching the real ones. He had a very large cardboard box at the end of the strip full of small cubes of foam to stop (catch) the cars
We started running R/C NASCAR races in the parking lot too. Still have my #43 on the shelf but haven't run it for a while.
https://photos.app.goo.gl/MrUR8vVWmmzD5pb29
He was in business for about 3 or 4 years and then one Saturday we went over to have some races and the store was closed and TOTALLY gutted. Nobody new what happened.
Stay Safe.
Jim 
Main WIP:
On the Bench: 1/48 Tamiya - Vought F4U-1A Corsair for Group Build 'Absent Friends' 50% 1/48 Encore Models - A-37B/OA-37B Dragonfly 50%
I keep hitting "escape", but I'm still here.