Dreams: Driving

I've been having an alarming amount of dreams involving driving lately.

Saturday night I was driving up a road that went straight up. I drove with the pedal to the metal and then all of a sudden freaked out near the top. I backed half-way down, whereupon my "mentor" (aka, some old dude) tried to encourage me to just go for it, that I do it all the time. I was scared out of my gourd - who drives on a road that goes straight up and then kinda curves backwards towards the top? In my dream there was some physics reason why this worked. Random.

Sunday night I was driving at top speed down curvy roads to keep up with a friend of mine when all of a sudden I hit thick, dense, impenetrable fog.

I wonder what these mean? Ideas?

Update: Night of 10/26 I had a dream that I was driving along the highway and this crazy driver was passing everyone and I thought, "That isn't safe." Next thing I knew, he was sliding out of control, barely missing my car, hit the tail end of a pick-up, then starting flipping down the highway. I watched the catastrophe in my rear-view. The pick-up was the only vehicle damaged and no injuries. I have no idea why I keep having these dreams.