Extremely weird dream, not really a nightmare.?

I've had a dream with zombies before and I wasn't scared. I was at my house and I saw a plane thing. I waved at it to come down, but when it came down I realized it was a 1 person plane so I couldn't escape with them. I think I wasn't scared because in a zombie world you can do whatever you want without being punished. For example I drove to school in my dream even though I don't have a permit or license. The zombies were just in the background and really slow so there was really no danger because everyone at school had a gun and perfect aim.