I personally would never drive that tired.I did one time and results were not good.Fell asleep behind wheel after a long day and working third shift.I was much younger then and felt I could handle it.Head on colision with a pickup truck.Thankfully no one was hurt.So I whole heartedly agree on not pushing it while driving.More people are killed by cars than guns.But if you are hiking/walking then by all means go for it...

BOATMAN
John