Don't do what my son and I did about 10 years ago.
One evening after dinner, still some daylight left, we drove south on the interstate just to see what was out there.
Quickly got bored since it is just flat farmland and decided to turn back, next two exits were closed for some reason then saw next exit was for a Military Memorial and we took it, but were unable to find the turn around if there was one.
Next thing we know, its dark, big stop sign ahead and bright flood lights lighting up the car. Guy with M16 says 'welcome to Cheyenne Mountain'. Half hour later after cavity searches we were back on our way.