Batman and the Joker have been adversaries since they first met in 1940. Since then, the Clown Prince of Crime has found creative ways to escape the Caped Crusader. Race with Spark Plug This set features 2 x Spark Plug Dongles, the latest innovation from Scalextric which allows you to race your car using your Android or IOS smart device. Simply plug the Spark Plug dongle into your Scalextric analogue powerbase rather than a traditional hand controller, download the app and race away meaning no more wires! Whats in the box 2 x themed character cars Over 5 metres of track, including a side swipe, crossover and jump 2 Spark Plug Dongles Free to download Spark Plug app 2 Characters Included in this Batman vs Joker Spark Plug set are two crash resistant character cars. These cars are built to be resilient; perfect for the bash and crash elements in this set. Exciting track layout This set contains over 5metres of track, and includes a crossover, side swipe and jump. Will you be able to stay on the track or will you get knocked off by your opponent? App-based racing Spark Plug allows you wirelessly control your car through your smart device. With the ability to personalise your profile or battle in versus mode, Spark Plug offers an all-new racing experience. Spark Plug dongles Simply plug the Spark Plug dongles into your layout like traditional hand controllers and race with your smart device via the Spark Plug app.