The Erratic dreams of StaySharp

So... in this dream I was driving a car from the backseat as if it was normal. Then the police stopped me and I freaked out a little, realizing that this was probably illegal. The whole weirdness of the situation made me do a nose pinch reality check, and the policemen (there were 2 but I only properly saw the face of 1) gave me a strange look. I didn't believe this was not a dream so I did another nose-pinch reality check, this time it worked and I knew I was dreaming. Now the policemen gave me an oddly satisfied look and then the scene switched, and I was suddenly in some kind of artificial cavern underground, though natural light came in through places in the ceiling. I spent the rest of the dream really taking in the details touching and manipulating the sand on the ground, appreciating how real everything felt.