My wife and I were heading home ,east to west, She was driving and I was finishing a phone conversation when my wife slapped me on the arm and pointed to the sky ahead of us, I look and see a blueish/white light going from south to north , the sky still had enough twilight in it that we could see a dark grayish matalic cylinder object.The light was on the front of the object and no other light was visable from our view. I estimate it was about 500 to 700 feet off the ground and about the same distance in front of us moving 150 to 200 MPH. it was about 50 long and 5 to 8 foot thick .The treeline on either side of the road prevented us from seeing the object more than a few seconds, we looked for it after we cleared the trees but were unable to see it.My wife is a skeptic but she can't explain what we saw.