It is looking good! It reminds me of the silent hill 4 room apartment hub getting more haunted each time. For the difficulty settings make it different models of car:

Siamese car: relieves stress when you pet it but meows incessantly when you are not around stressing you more.

Black car: sometimes it just disappears in the darkness and you can’t find it.

Orange car: it stresses you even more when you pet it. =p