Indy Race Car Set Press and Go with Speed Power Launchers for Lightning Fast Starts 8 Piece Set Super sports Indy style race cars with decals. Speed and instant action. Add to your collection. Press and go for speed launches with no batteries required. Great for play with all Hot Wheel type cars and trucks. No tracks needed. Brightly colored Indy style cars. Perfect gift for little race car lovers. No assembly required. Race, crash, jump. Demolition derby. Roll-over. Cars not compatible with Hot Wheels tracks, but launchers COULD be used with Hot Wheels, Matchbox, and many other cars/trucks/atvs, even on their tracks. 2 Launchers and 6 cars in each set. Fast rolling wheels. Zoom, launch, crash, fly over obstacles. Hours of fun and imaginative play.