Have you ever gone to the airport and needed to show your driver's license to security, and you didn't realize it was expired? I have. They let me go through, but when I tried reserving a rental car in my name the company wouldn't let me because of my expired license. I managed to get to my destination, which was Las Vegas, but because I spent all my cash I needed to get extra money. I tried cashing my personal checking account checks but couldn't -- you guessed it, my license was expired. Thank goodness for debit cards!
Make sure this doesn't happen to you: Before you go on a trip, review any passports, licenses and other essential documentation you'll need.