I was coming home my normal route from work, salt point turnpike in stanfordville in dutchess county, which is in the mid-hudson valley. it was approximately 21:45-21:50 – i was near the intersection of market lane, which is on a curve in the roadway, i noticed a sort of orange "glow" in the sky, maybe 30% above the horion in the southeast. i could not be sure if it was a planet or a plane, but as i rounded the corner and moved toward it, i could see it was neither as it appeaared to be moving toward me as i moved toward it. it appear to be hovering, but it was hard to tell its movements other than it looked larger as i got closer. by this time i was on a straightaway and, because of numerous deer in the area, i slowed down and was able to keep an eye on the object as i traveled the road. i took notice of the fact that it appeared to be a glowing,flatish hexagon shape that looked to be, for lack of a better description, on fire, and it was quite large. i was able to keep it in site until i hit a tree line and could no longer see it. as i cleared the tree line, possibly no more than 5-10 seconds later, i looked to where it should have been and could not find it. i slowed and scanned the whole area in every direction and there was nothing to be found. it seemed to have vanished completely. i have had previous sightings of unexplained craft before, and i guess i live in an area that is prone to unexplained craft being spotted, the mid-hudson valley. i have alwasy been more curious than afraid, and i felt that way when i saw this craft, no fear just curiosity.