Some of your controls are already showing their value. A couple of days ago I entered 5 new tanks, after a very long trip. When I tried to save one of them I kept getting a pop-up telling me to enter a valid distance value. I started cursing at it, because it looked fine to me. Just as I was going to leave in disgust, it hit me: I entered an extra zero, making it a 5700 mile tank!
