Carrera Slotcar Camelback/Bridge 143/GO. Flat tracks can become boring over time. Bring the third dimension into play. Those who drive too fast over the camelback will take off, but those who go too slowly will lose. Practice until you find the optimal speed. Compatible with Carrera Go and Digital 143. Package includes: 2 convex track pieces, 2 long concave track pieces, 4 short concave track pieces, 12 track connectors, 4 supports.