UFO sighting on route 93 between Arizona & Nevada?

In 1990, my wife, brother-in-law & my son, we were driving along route 93, in Northern Arizona, Heading to Las Vegas. It was about 02:30am, I was driving our van, my brother-in-law was sitting in the front passenger seat and my wife and son were asleep in the back. In my rear-view mirror I saw a very bright light behind me, like a car with high beams on at a very far distance. A few seconds later, 20-30 seconds, I looked in my sideview mirror again and this light lit up the whole van and roadway and all I heard was a "swish" the whole van shoock as if we were hit with very strong sidewinds. The radio died, all we heard was static for the next 15-20 minutes.
My brother in-law, who was dosing off in the passenger seat jumped right after the bright light and " swish" and yelled, What the hell.  He thought that I was falling asleep. I said, hell no, did you see that, holy smokes.  Even though this happened quite a few years ago, I have retold it countless times and remember it as if it happened yesterday. I have always felt a presence of something ever since that event. I'm not sure what, but it's like I've/we've been "watched"  I am a professional, married family man. Not a weirdo. I just wanted to shares this with everyone.
Witness indicates that the date of the event is approximate.  PD