If you need an excuse to get out and go exploring, here's a great one. In fact, thanks to the great prizes waiting, you could get a nice vehicle upgrade in the process.
Daystar's Geo Stash contest is what we're talking about. Go to the Daystar links on the flyer (click the image for a better view), find the GPS coordinates, and go where the coordinates lead. Once there, you'll find a Geo Stash marker that you can turn in to claim your prize.