It was an incredible site and appeared to be large and traveling at a very rapid speed; the fireball was green and had a long train that extended behind it. I was driving West on I-68 at night (~8:15 p.m. EST) and saw the fireball appear out from the right side of my windshield. It appeared to be mid-high in the sky and its trajectory (East to West) had a slight curve to it as it sped over and beyond.