Was riding from munfordville ky out 218 toward cub run . my fiancé said look at that plane i replied that must be a satellite because it's green just as i said that it stops changes color and zips back towards us i know nothing we have stops without momentum carring it forward i found myself afraid thinking oh my god there gonna get us .. it stops again changed color as it zipped off at a 45 degree angle toward its original flight path and when i say zipped i mean fast enough it should made a sonic boom but there was absolutely no sound i could hear and was out of sight and just gone .. the whole event had only taken a min or 2 maybe 5 at most cause i had compleatly stopped the car on road to watch once i felt that shock and fear hit me i must have just stopped -- i always thought people just thought they saw such things and gave it no serious thought thinking they were either dumb or just crazy but i know there's no way anything i've ever even heard of flying the way this thing did and it was real and wasn't reflected light or a satalight plane or light reflecting off space station or what ever my rational mind could come up with . this traveled miles in seconds abruptly stopped came stright back a mile or more stopped hovered and took off almost to fast to see at a compleatly different direction than origanally traveling -- i'd love to take a polygraph test about this and an iq test as well . i have a 136 iq and i'm not just some dummy who seen a helicopter or some natural event ..