VIP in England had a slightly different approach to their slot track design. Might be something that some of you guys have never seen before. There is some track on Ebay now and the picture shows clearly how their track worked. The track was metal with the outside area of the slots insulated from the center section between the two slots. The center section carried the common ground voltage and the outside areas carried the controler feed to each lane.. Each lane shared the common center. The track was painted and the areas next to the sots was left unpainted looking like the rails we have on our plastic tracks. Here is the link.
http://www.ebay.com/itm/VIP-Raceways-1- ... SwV0RXvgMI