Being that I up until a couple of weeks ago was working at 2:00 am I tended to not get enough sleep before work most of the time so by the time I would drive home I would be exausted. One time driving home on the parkway I nodded off and when I jerked awake I was inches from hitting the gaurdrail on the parkway. I was so tired the rumble strip didn't even wake me up. It was pretty scary. I pinched myself repeatedly all the way home to help me stay awake. Thankfully it's on a 20 minute drive from where I used to work to home so it wasn't to bad.
I'm so glad I quit that job.