Nightmare

I just had one of the most worst nightmares I had in a while... It starts off at the Alhambra hospital, where my mom has to go to physical therapy. I choose not to go in so I am sleeping in a
2001 Toyota Avalon with some basic aftermarket wheels. After what I think I'd about an hour, I wake up, a little dazed and I see two people. One standing in the front of the car and one in the back. I wasn't too sure what they were doing but it felt that the car was being lifted. I heard a lot of noise, that represented wrenches being turned really fast. I fell back asleep. Almost an hour later, I wake up again, and everything seems normal. Once I stepped outside of the car thouh, things got a little strange. Every bolt on our car was loosened to the very end before the wheel could fall off. Also, the rear right wheel wad replaced with a different wheel (one that looked like it came off an old Buick). Once I realized what jsloened, I looked around to see if there was anyone staring at me. That's when I noticed a group of teenagers. I instantly jumped right back into the car and drove very slowly to the enterance of the hospital, because we were parked somewhat far away. I noticed the teenagers were following right behind me in a blue truck (Ford Ranger or Toyota Tocoma). At that point, I got super suspicious and I parked on the side of the hospital entrance. It takes about 30-40 steps to walk inside. Once u got out, there were a few people walking by (Hispanics) and they were also staring at the car. I was still very confused so I started to tighten the bolts to the point where they wouldn't fall out. The Hispanics saw what I was doing and they asked what happened. I told them that someone was messing with my car. I took a few pictures of the car and the wheels but not any of the people who were looking at the car. I locked the doors and I headed towards the hospital entrance. Along the way, I saw that blue truck again and the teenagers who where in it were smiling.  Right before the entrance of the hospital, there was a stairway that led to the lower entrance so I used that. Right when I walked in, I found my mom and I told her what seemed to be happening. She said ok, but we both went to the bathroom first. The men's bathroom was very very big.  The stall I went into was a very big urinal that looked like a water fountain. Once I got out, I went to talk to someone working at the hospital and I told them what happened. I also showed them the pictures I took. (The person was Asian) we then rode the elevator back up to the main floor and in that ride, another Asian accompanied us. He thought that the elevator was over occupied because he was reading the notes. The employee told him that it was the weight limit he was looking at and then the elevator started moving up. Once we got out, we started walking back to take a look at the car. It was sunset and the afternoon at the same time. When we walked back to the parking spot, our car wasn't there. In fact, there were no cars at all. I was very very confused and panicky and was mad at myself. I should have stayed in the car. My mom called my dad to come pick is up and I started walking back to the entrance of the hospital. That person who was working at the hospital disappeared. When I was walking back, I somehow was sitting in our car and it was parked right outside the entrance of the hospital. When I got out, my mom screamed "you found the car!!) I still was very confused. How and why was I in the car? Things were starting to get a little weird again. When I was walking back, I saw that group of teenagers again in a blue Ford Ranger. The first three letters/numbers was J81. Our car seemed like it was in the same condition it was in except that one wheel that looked like it came from a Buick was now replaced with a compact spare tire. Also, the rear right window was smashed. When my dad and my brother appeared, we checked the trunk. That was also very stranged because it seemed as it was untouched. After that moment, I woke up. What does this dream mean?