My wife and i were coming back from california to our home in pahrump nevada. it was about 3:00 am. i like to drive late at night cause there is no traffic. we came out of the desert on rt 127 and turned onto rt 372 which goes through some small mountains, my wife said to me "look at that". i turned and looked out the passenger window and slowed the car down to a stop and observed a turquoise green glowing orb about 200 feet up plummeting to the ground. we both thought it was going to hit the ground. it was in front of the mountains, about 200 feet from the car and over level ground. all of a sudden, it stopped dead about 15 feet off the ground. hovered there for about 10 seconds, then sped off up and over the mountain never to be seen again. we both had an excellent view of the object and turned to each other and said "wow what was that". we hurried to get past the mountain to see if we could get another glimpse of it, but it was gone. on a previous occasion i was coming the same way but i was by myself. in almost the same area, only on the 127 before getting to the 372 still in the desert, i observed three orbs of different color. one red, one green, and one yellow. they came streaking past my car at ground level like they were chasing each other. they crossed the road in front of my car and sped down the shoulder on the passenger side about 5 feet off the ground.