Two large yellowish bright sphere lights above the hills at the Jolon Rd exit Southbound Hwy 101. Both lights looked like fire balls as we got closer and we saw what appeared to be smoke rising from them. They lit up the sky. One seemed to disappear and then we saw the remaining one seem to "burn out" or disappear. We were driving southbound on 101 and didn't pull over or stop but slowed down to view them.