Hot Wheels id takes vehicle play to a new level of pulse-pounding excitement, offering a first-of-its kind mixed-play experience. Track speed and count laps with your classic Hot Wheels track and the Hot Wheels Race Portal. With every milestone conquered, kids' racing prowess is boosted. Build a virtual garage of outrageous vehicles -like this Solid Muscle -to race, jump, crash and compete. Unlock performance boosts, races and rad rewards. Race cars in insane digital races, unlock rewards and level up with the free mobile app. NFC-enabled device or Hot Wheels Race Portal (sold separately) required to scan in cars. Take it to the next level and use with the Hot Wheels id Smart Track (sold separately).