Be careful drinking energy drinks on low fuel I have found they can make you nauseous and jittery. I do drink the blue monster drinks and they help when I am running on empty!
when I drove to west palm beach a few years ago I tryed staying awake by taking those no-dose pills
wow don't take those I stayed awake but after a few more hours of driving I started seeing things
never again I think I will pick sleeping from now on