One of my current WIPs is a GTA1 clone/experiment in Godot 4. Using some Kenney and HumbleBundle Low-Poly Assets, I implemented some of the simpler things like entering/exiting cars, nearing NPCs with a speech-display and NPCs following the player within a restricted area. As long as it’s fun I may introduce some other mechanics, like a music-track playing on entering a car, some get-the-car-mission, or a mini-map.