I was sitting in the backseat of my roommates SUV as she was driving north just after we picked up her boyfriend from the airport. As we were driving north on South Semoran BLVD in Winter Park Florida, my roommate that we just picked up spotted a triangular craft hovering just below the tree line as we were all astonished by what we were looking at. I can still remember to this day that the craft was dark in color, made no noise, had a bright red light in the center, and what appeared to be windows around the edges of the craft. The craft looked huge in size from what i could describe as between 100 and 300 foot in size while we able to witness this craft for aprox 20 seconds before the tree line hid the craft from sight because we were moving. As I told my roommate to do a U-turn so I could photograph this craft, she did and to my astonishment, the craft was gone within the 30 seconds or so from doing a U-turn. I can only assume that the craft took off at a high rate of speed that I did not witness, or it became invisible.