all lights (incl, headlights) went out while driving

I was driving home after midnight, on a country road with no streetlights. I had my high beams on, made a left turn and everything went black!! I couldn't see the street in front of me or anything else so I slammed on the brakes, I sat there for a few minutes waiting for I don't know what, got out my flashlight and shined it around the area. My engine never stopped and after about 2 minutes all the lights came back on and worked fine all the way home. I am glad there wasn't a logging truck behind me that night!! This could have been a really bad night for me, and now I don't know why it happened, or if it will happen again and if it will, when that may be!