Just a quick Natchez Trace Parkway story. In 2003 as we left Nashville TN to drive down the parkway the first time it started to snow! (This was February). It actually snowed 12 inches in a few hours. It took us 4 hours to drive from Music Valley to the Parkway covering a total of 37 miles. We stopped at Bird Song Hollow pullout just before the Double Arch Bridge at 2 PM and decided to wait out the storm.
As we got comfortable a ranger stopped by to tell us they were closing the road. He agreed that we were probably safer sitting tight than trying to move on and told Tupelo we were staying put. We had a wonderful day of snow play and reading and in the morning the ranger came by to see how we were. We decided to move on south, slowly, and plan on meeting him at the southern gate, about 10 miles further on, where he would open it to let us through. It took us over an hour to cover those 10 miles! The snow was pristine with the only disturbance being the tracks the ranger had left. In Tupelo at the headquarters/visitor center we agreed that the young ranger in training could have all the snow he wanted off our tow'd. He had never seen it before.
The rest of our trip on the Parkway was a bit less eventful but we have repeated the drive several times now.