Scalextric Digital C8515 Chip Car EasyFit Plug Conversion. This groundbreaking EasyFit Digital Plug from Scalextric allows you to convert standard Scalextric cars into digital-ready vehicles for use on a Scalextric Digital layout. Most cars manufactured from 2007 onwards are equipped with a socket for easy connection. The conversion process is simple, requiring only a small screwdriver and taking less than sixty seconds. With the Scalextric Digital system, up to six cars can race on a single lane, enabling drivers to switch lanes for overtaking and blocking maneuvers.