UFO moving like a worm caught in Pennsylvania

On May 17, 2017, an automobilist was driving down a road in Pennsylvania and he noticed a strange UFO moving like a worm in the sky. After a few seconds, he pulled over before taking pictures.

Witness statement:

Long Black , moving like a worm would had what looked like a front window . Personally I've never seen a ufo in my life but the lights I see in the sky at night . I was driving down the road and noticed the strange object moving around , I pulled over and took pictures.