My doc gave me valium so I could sleep on red-eye flights. Seemed to work. Wasn't racing the next day though.

I have a looooong ride coming up next month (136 miles) and will need to stay over at a friend's house, get up VERY early and travel an hour - wouldn't mind something that would knock me out early so I get a good night's sleep. Nothing worse than not being able to fall asleep sleeping in a strange bed, thinking about how early you need to get up and how long the ride is the next day.