This game is the track with many different hills and obstacles for the R/C cars racing. You can hold a competition with 4-6 cars at the same time since we are offering the cars in 4-6 different frequencies. With the extra batteries, it can run a whole day for your non-stop business. The dimension of the inflatable track is 12m x 9m with 3 normal plastic R/C cars and some spare batteries and chargers