Joe,
That is easy enough to do on a really great day and not much traffic around. I did it once and just happened to look over at my gages and thought one of them is broken as it isn't reading. Then I realized it was my gas gage. Fortunately I was on top of the mountain over toward Lassen and coasted about 20 miles down the mountain until I came to a little store that had a gas pump. After that I watched the gas and other gages closely.
Edit to add this for Tru: My cousin in Arkansas sent me this picture.
Ron