Biggest Nope ever

So about an hour ago I had the biggest Nope moment of my life

>My friend Brad and my ex gf went to go smoke to relax before our final exams for the semester tomorrow, I went along but didn't smoke (I feel like its bad karma before tests).

>They get pretty high in Brad's car, I sit on a park bench a few yards away so that I don't get smoke boxed.

>My ex says she needs to get to her dorm before 10 so we leave.

>Brad starts driving, but he was still high and so his driving was sketchy.

>I'm sitting in the back next to a pile of Brad's shit.

>Every now and then I would look over, and because of his stuff being there, I thought I saw a person in the edge of my vision, but when I look it disappears.

>Ex looks back and smiles at me, then gives me a weird look before turning around.

>See the figure, and reach over and throw Brad's stuff to the ground.

>Figure reappears, and I look at it again....it doesn't go away.

>It's wearing a hooded robe, and is looking straight at my ex's seat.

>I look back at the road and start freaking out.

>I look back at the figure, it "turns" to me and reaches its hand out.

>I don't grab it and look back at the road.

>Next time I turn back its hand is still outstretched, and I got the feeling it was looking past me, like into me or something.

>Hand reaches closer, I reach out and grab it (I think it's a hallucination, and think touching it will disperse it) I feel like I am touching cold granite.

>As soon as I touch it Brad runs a red light, and almost gets t-boned.

>He is calm but me and the ex are freaking out.

>I look back over but the figure is gone.

>Later we drop Ex off, she is acting weird, looking at me funny.

>When I ask her about it she says I was acting strange....says that she turned around and smiled, and I put my finger to my lips like I was telling her to shush, and that my eyes looked weird.

>Can anyone tell me what the fuck just happened? I wasn't high, and the sun roof, and back window were on vent, I could barely smell the smoke, and I'm still 100% sober. I just want to know what is going on.