For some reason John needed me to drive him to the trolley so he could go to jury duty. I thought he just needed me to drop him off at Hazard Center, but while we were on the road he said he needed to be taken downtown, but not to the courthouse, just to a trolley stop. Then (in typical dream-like fashion) the roads were all covered in gray dust, like a volcano had exploded. We came to an intersection with three or four bridges, and we had to cross one of them, but there was all this road construction going on and it wasn't clear which bridge was open. So I stopped the car to get out to ask. When I got back to the car, John had gotten out of the car and he was out asking, too, but a friend of John's (not an actual friend, I didn't recognize him in the dream nor do I in real life) was in the car, so he and I started talking. Then suddenly my parking brake gave way, and even though we were on a level surface, my car started speeding backwards.
Then I woke up.