In Herki's avater,are infact the slotcars before the Scalextrix Mania.
Made by Faller,they were called Faller Auto Motor Sport,were slotcars in H0 size,and had an engine. There have been several boxes; Figure of 8,oval,but later they also made boxes including the Nurburgring Nordschleife and Solitude tracks. Cars are quite rare now,you can easily catch €25,- for a normal car,and for more special cars prices easily go over €100,-.
Later Faller AMS evolved into what Scalextrix is now. They made other cars (Formula 1 cars,GTs,CanAms) and the tracks changed: Instead of roads there came banked turns,loups etc.).
I have around 20 cars myself,and I am building a city around the track for over 3-4 years now. I have several Mercedesses,2 Porsche 911,2 Porsche 356,Jaguar E-Type,VW Bus,Several Opel Diplomats,Ferrari 250GTO,Porsche 904 and more.
Its very fun to drive them