To download maps or vehicles, the most reliable sources are: Steam Workshop : The primary hub for legitimate, easy-to-install car mods. Boosty/Community Forums
. The developers have stated that map modding is restricted due to the complex binary format of the simulator's world files, and there are no immediate plans for a public map editor.
: Custom maps often replace one of the existing districts in the "Free Drive" menu. The Future: City Car Driving 2.0