Long, cigar shaped objects flying very low, doing manuevers that earthly aircraft can't do. Disppeared into thin air.4 or 5 aircrafts about 1 mile ahead of me while driving. They looked like they were goin to land but would just do a 180 and fly upward and disappear into thin air. They were doing things any earthly aircraft can't do. (my dad is a pilot- i'm pretty familiar) Then it was as if they saw us- we were on I-5 heading south and one appeared on the left side of us on the other side of the freeway and was going the same speed as us (75-80 mph). It was at the same height as our small truck- maybe a few feet higher. It started swaying from side to side like it was going to crash. It stayed with us for about one minute and then dove down into the corn field and completely disappeared. We kept looking back and never saw it or any others again. It looked like a long cigar with a white and I believe a green light on each end pointing forward (i guess they can't see in the dark:-) ). They were about 50 ft. long.