Not sure if anybody said this yet but:You should add fire and smoke around the vehicles and pollute the streets a bit more. For an apocolypse, this looks too clean.Otherwise, 7/10
This looks pretty good for a start. I would leave a space between the exterior only buildings, and get rid of the windows on the bottom level.Also, maybe add some balconies, debris, etc...I kinda like it actually.
Like this