2017 saw a major change in casting numbering. Since that moment, recolors are named with a different number than the original, thus causing the number limit of cars to expand to 365. The idea of numbering a casting with a number corresponding to their own series was also aborted. There were also some new mainline series introduced, such as "Experimotors" (cars with moving parts, or a secondary purpose), "Holiday Racers" (cars that have a holiday based theme), "Factory Fresh" (a series including newer, sometimes older castings with fabric painting) and "Camaro Fifty" (a series dedicated to the Chevrolet Camaro, and its 50th anniversary).