This mod is created by me and inspired by the scene where the Joker looks out of the window of a police car. The character model is based on assets from GTA Online / GTA 5, and the textures have been reworked to fully match the Joker's theme. 3D model in DFF format, textures in PNG and TXD format.
If you want to know more about the mod, I made a YouTube video. Enjoy the game!