Carrera track supports racing 1/24 and 1/32 scale analog slot cars. Some other brand cars may benefit from using a wider and deeper guide than standard to run on Carrera track. Standard analog Carrera track is compatible with Digital Carrera track with the use of a Digital Adapter or Digital Control Unit. Carrera Digital track allows up to six cars to simultaneously race on the same race layout at once - sharing the same lanes. Digital racing allows you to change lanes, set up pit stops, and enjoy a more realistic racing experience. Digital track is compatible with the standard 1/24 Carrera track and supports 1/24 and 1/32 scale cars.