Yup. It was just a proof of concept so I wasn't too focused on polycount. Another error I made was there is no scale (all the objects have no proportion to each other).
All of these would be fixed of course when I try it again.
Sometimes when spectating in GTA Online the environment doesn't load correctly and you see characters driving around the city in the lowest level of detail. It looks like an N64 game and makes me wonder what could've been.