At 6pm a gigantic super bright search light with cloud like features appeared that lit up the sky and the whole canyon south of emigrant gap on hwy 80!...it was right over head,many cars pulled of the road to watch thing!...after 5 min the northern part split off and headed west toward Sacramento...it had a comet like appearance,but still as bright! The original cloud stayed stationary as its light diminished to nothing!...the comet thing just disappeared after several minutes!...the whole event lasted 14 to 16 minutes!...I watched the event from the west bound observation area and scenic overlook with other motorist who were just as spellbound as me!...I commented that nobody would believe us!...one man said "I believe you man,cuz I'm here and saw it too!"....he told me about mufon and that I should post it!