Craft observed while driving through the Az desert,missing time.I was traveling on my motorcycle late at night.It was somewhere in the middle of the Arizona desert. I saw this craft, with very bright white lights. It was probably 60 feet above me,and it made about 6 almost on-a-track,circular patterns above me.I put my bike up on it's stand to sit and watch this.On about it's 5th or 6th pass,it hovered for two or three seconds,then in the blink of an eye,it was gone.When it was hovering over me,it made a very soft and low humming/swishing sound.I got back on the road to catch up,as I had been following my parents,we were all re-locating to New Mexico.When I caught up with them in the next town,they were just finishing their dinner.They wondered where I'd been,as an hour and a half had gone by.To me it felt like I had spent no more than 5 minutes stopped by the side of the road observing the craft.It's important to note that at the time,the speed limit on that Hiway(Hiway 10)was 55 miles per hour.After I observed the craft,I pushed my bike to 105 mph to catch up,assuming that I COULD catch up.((NUFORC Note: Date is approximate. PD))