Chamerlain, SD to Powell WY, 917km

A long day today as we covered a lot of ground. Too early to see the Murdo museum and we flew by before it was open. I suspect we passed right by Dave and Adrienne while they slept. We then headed on to the South Dakota Air and Space Museum and took a tour of the Minuteman II Missile training site at Ellsworth Airforce Base. We also had a tour of the base. Lunch was in Gillette today, where we also gassed up. The cars are running fine, we averaged 72 mph along the I90, but speed dropped of as we changed to Hwy 14, where we headed up and over the Bighorn Mountain, to a height of 8347 feet, and then down via 8 and 10 degree grades. Some snow left on the sides of the mountains and some great views. Rog is uploading a few pictures as I type this. We are headed to see old faithful tomorrow in Yellowstone National park..on the way to somewhere in Idaho..