I'm not sure how I come to realize I was dreaming, but I believe this was my first. I was in driving in a car with other dream characters. I realized it was a dream and started to explain to them that they we're just a part of my dream and weren't real. They didn't seem to upset as I told them when I woke up that they would cease to exist. I guess they just didn't understand. For some reason ( I think I was being chased by another car or somethin) I jumped out of the car and watched as it drove into a river with them in it. I didn't care, because ... well they weren't real.