lights aganst a mountain??

Heading west on I80, from Elko Nv.
My mother, my brother was sleeping in the back seat at the time, and me.
Any way what we saw was a light doing somthing aganst a mountain. This light would get verry bright and kinda shutter then back up, then go to the mountain and do this all over again. My mother and me watched this for about 45 min.
It was late at night, about 12 or1 in the morning, no moon hardly no traffic on this road, any way after watching this light do its thing for a while it turned to us, it looked like it was comming right for us, finly it was so bright in front of us we could not see the road.
Then sooner than it got in front of us it was gone, not left, I mean gone, like one would turn off a light bulb, light and what ever was just gone.
This happend in the summer of 1964 I dont recall the date.
Any way I would like to know if any one else, in the summer of "64" in Nevada, saw somthing like this??
Date is approximate.  PD