One matalic disk huvering in the sky over the mountin for a few Min. then speeding north at a very high rate of speed into the clouds.Thair was only one craft huvering over the Thompison Peak aera of northen Serria Navada MT.range, it was in a large open aera of clouds with clear blue skys around and above it. Thair were no visiable markings, and it was huvering in one spot for appx. 5 to 6 min. after I noticed it. It was metallic color, no lites visible, after the appx. time ststed above, it went from a dead stop to a very high spead horth across the sky into a heavy cloud bank. I looked up and saw the object after seeing some cars pulled off of HY 395 north, people were out side thair cars looking up in the direction of the craft, that was when I looked out my side window and started watching it. I do not if any of the people parked reported it or not, but they were looking and pointing in the direction of the objict.