You can now customize Your Hot Wheels Experience with the Track Builder Spiral Stack-Up There are 15 Hot Wheels Track Builder Spiral Stack-Up tracksets to be won. Each worth £20.99. Build and rebuild in every direction, horizontally or vertically, for a truly customized experience every time with the Hot Wheels Track Builder Spiral Stack-Up. Set up the track and place a car at every gate. Launch one car from the top and release any other car that has what it takes to make it to the finish line. LOOK OUT FOR THIS EXCLUSIVE PROMOTION: Buy five Hot Wheels cars to get your hands on a free, limited edition Black Car! For more details go to HotWheelsPromotions.co.uk.