It was about 4:45 PM and it was still fairly light with the sun going down. The whole sky was open in front of me on a long stretch of straight highway, so it is not like I came around a big bend and suddenly saw this, so it did not cross in front of me, but just suddenly appeared to my left moving horizontally away from me. It was a spherical shaped, very bright bluish/green light, the color and brilliance of which I have never seen in the sky before; moving too fast for a plane, but probably about as fast a small passenger jet. I would have written it off as maybe an odd reflection of the setting sun on a jet, but it separated into two equally sized spheres right before my eyes, and then went for about 4 seconds at the same rate of speed, and then with a whole sky before it, just poof, disappeared??? The whole sighting occurred with in about 9 or 10 seconds.Occurred between exit 7 and 8, about 1/3 the distance passed exit 7 heading East bound toward Albany.