Played it about 2-3 hours ago!:
My Thoughts (Contains Many Spoilers AND A RANDOM THEORY):
I have returned to try the new game! I will admit that I assumed it was the "run of the mill" type of horror game at first. I assumed that either the person I hit would be the murderer or perhaps I was in fact the bad guy at first. I then assumed that the person after the victim (the lady I hit with the car) was the villain (naturally so, right!?).
It wasn't until I was recording the outro that this following theory hit me (I speak on this towards the end of the outro): What if, because bro was so damn tired, he hallucinated the entire situation. They never (as far as I know) tell you HOW long he has been working, just that the surgery he was doing took four hours, and that it was currently 2 am. But assume he has been working long hours for a minute, which is not unheard of, plus surgery would for that long would probably make you tired anyways.
The car that rams the back of your car then suddenly "disappears" might not have existed at all. The Lady who I hit appearing in my house 2-3 times? Do I even need to say it? He was hallucinating as she is clearly still on the road. Keep in mind he was also drinking which, coincidentally, was just before he started seeing her appear in his house.
The only thing going against this theory is the lady herself. The only thing I can think of that could go against this is...maybe she didn't exist either. The good ending shows him taking her to the hospital, but we never see him take her out the car. We never get to see if anyone interacts with her either. While it does not prove that he is indeed hallucinating for exhaustion (and later for alchohol) it also doe not disprove it either. I havent had a horror game make me think this much in a while. And perhaps the dev didnt intend that all all. This was just a fun theory to think about dear reader, whomever you may be. All in all 5/5 because the dev made me develop head canon.
-Vib3