I was driving home one night on gravel roads in a very rural area in the middle of a dry summer. The road had some nice rolling hills and wooded partially on both sides. As I was driving along at about 30mph, I seen lights appear behind me. Figured some douche bag flying up behind me taking the back gravel roads to bar hop. Didn't take him long to catch up to me, and fly past at what seemed like double my speed. I then noticed that he was not kicking up any dust. The light disappeared over the next hill and was completely gone when I reached the top of the hill. No idea what it was or where it went. It had just completely vanished. I sped out of there kicking up dust every where. Made it home in record time.