After murdering dozens of flying bugs inside of the car, I drove on. It was completely dark by the time we crossed into Wyoming and we drove all the way through overnight so I didn't actually see much of anything there. There also weren't a whole lot of lights or towns that we drove through, so I guess we didn't miss too much. A little after midnight, I exited the freeway because we were moving from I-80 to some other smaller highway, and because there was no junction, we had to drive through a very small town (Looking at a map, I think it may have been Rawlins). I was going about 10 over the limit down the completely empty main street because I had just got off the freeway, and wouldn't you know it, just as I was turning onto the other highway, I got pulled over for speeding. Okay, fine.
About 2 hours before getting to Mount Rushmore, I got too tired to drive so my dad took over for the final push. We got there just as the sun was rising, and luckily, the gate to the parking lot was open, but there were no attendants around to take our money, so we got in free. Benefits of being early I guess.