Towards the end of the 70s the Carrera Company of Germany produced a slot-less car racing system in 2 scales. The big one, called Carrera Servo 132 was in 1:32 scale. The cars where adapted from the original Carrera Universal system and Carrera Servo 160 where the cars where based on the Carrera 160 slot system. While the cars where adaptations of the existing cars, the track was a complete new invention. Instead of a slot and 2 or 3 power rails the system had 4 power rails, one beside the other. 1 car would use the outer rails and the other one would use the inner rails.
Carrera Servo 132 Trucks racing with VW Bully as moving obstacle