05/10/1967 23:00 fallon, nevada, glow on horizen, followed by, hovering colored discs, 20 minutes

this event happened a long time ago, but has been on my mind since.  i have never reported on anything of this nature but feel compelled to do so just for the record.  
i was 28 years of age and my late wife was 23 at the time. we were travelling north about an hour south of fallon when we observed a bright glow on the horizen.  this was followed by a number of glowing discs (about twice the size and same shape as a curling rock) which varied in colors of blue, green, red.  they seemed to be scanning the ground  when suddenly as we were driving one of the craft was along side our car.  
as we passed it i looked back in the rear view mirror and there it was hovering slightly above and about 20 feet behind our car, we were doing 75 mph. and the craft matched our speed for about 5 seconds as if observing us.
Date may be approximate, although the source does not indicate that fact.  PD