Build the Supersonic RC Racer, take control, and roar across the finish line to take the checkered flag! This high-powered RC Racer features super low-profile wheels for a super-cool look. Crash, rebuild fast, and get racing again! Power slide around corners on the extra slick wheels and leave your opponents in the dust! Modular components let you build an RC car of any size or shape -- and the Supersonic RC includes instructions for awesome alternate models! You can even use parts from other LEGO creations. Three channel controller allows you and two friends to race up to three cars at once. Six AA batteries required for racer and 1 9v battery required for controller (not included).