When I Get to the Bottom I Go Back to the Top of the Slide
It was an extremely basic 'toy'. The cars were pulled up the ramp by a conveyor belt and would roll down the winding track, back around to the conveyor belt, and do it all over again. Ridiculously simple, but somehow enthralling. This is what passed for entertainment before the internet, kids!
Anyways, I'm pretty sure I had this set when I was a wee lad. These four were found at the flea market a couple weeks ago, and even though they were sans coaster, they were way too cute to pass them up.
Each car has a couple steel wheels underneath and function just fine as little toy cars on their own. No roller coaster required!
I'm not sure exactly when these specific cars were made, I did a little Google research and found a few different looking versions but not these specific cars. If anyone has any more specific info on when these came out and what specific set they were released with, let me know!