So normally I have basic dreams, or ones that don't quite stay in my head like this, but this one always happens when I have a job interview the next day, with only a few details changing.

So I get into a car with my roommate, the car is one of those futuristic ones from the show Upload. We are going to a meeting or something. For some reason, on the way, we pick up 4 people, a woman and her son, about 6-7 years old, the guy that plays Bumper on Pitch Perfect, and on of his friends. The woman and her son look really familiar, but I can never remember how I know them. Suddenly, the car had added features, such as a bathroom in the back, with a shower/bathtub combo, and you could adjust the amount of people in the car. I was messing with the features, showing off, and the little boy is overly interested. I also noticed that we were on the road for a lot longer than we should've been to get to my destination. After a bit, I decide to go pee. I walk into the bathroom to find the little boy peeing on the counter. Which was scary because I JUST saw him in the main part, on the other side of the room. He giggled, jumped off, and ran down the hallways (where did that come from ?) I went and did my business, turning off the light afterwards, and saw the silhouette of the little boy down the hall holding a knife. I went to run back to the main part, but he made a move with the knife. I backed into the washroom and slid down the wall onto the floor. Also, now the door is gone ? I was crying and screaming, but hardly any sound was coming out. He was walking down the hallway and dragging the knife on the wall. When he got to the doorway he threw the knife at me. Which bounced off my shoulder, onto my knees, and landed on the floor next to the sink on the other side of me. Then the boy attacked me, to which I defended myself, I got hold of the back of his shirt and started flinging him around the room. He was laughing at me. I went back into the main part, kind of flinging him. He was still laughing for a few seconds until he realized we weren't alone anymore, and then he started crying. His mom yelled at me, I tried explaining what I did. She didn't believe me. I sat alone for a while and then the boy left and came back with 2 sharp objects. To which I am now freaking out. The mom still doesn't believe me, so I tell her I'll show her, and she agrees, but tries bringing her son. I told her no way and started crying and screaming and trying to keep him away from me. She then takes the sharp objects saying I'm fine now. I grab all sharp objects along the way, which was a lot. And show her the bathroom and marks in the hallway. She believes me, starts talking to her son, who shoves her into the shower and starts stabbing her. I run into the main part and lock all doors leading to this child. I go to call the cops and then I wake up.

This dream terrifies me everytime I have a job interview. The only things that change is the type of car and the original person I'm with. I've had this dream now 5 times since I was 15 and I'm only 20. Any help would be great..