Driving home from work heading south on i-91, at first i thought a new construction crane had been set up to the side of the highway because of two bright stationary lights over top of the trees. as i got closer to the object, i realized it was a flat craft just hovering in the dark sky, it was darker than the sky so i could see its outline. i was a black wing, maybe 50 to 100 feet across, it had two bright lights possibly on the underside and had lights along the front edge of each wing, maybe five on each side, they looked like windows, i could kind of make out an interior space. it wasnt until i drove under it that i clearly saw the wing shape, i tried to slow down as much as possible, it was rush hour and alot of traffic, but i then realized thus was something i've never seen before and it was just floating, silently.