I was driving toward Concord, NH on I-93 South. At about 7:25pm I looked up in the sky and saw 3 lights that looked to be in a triangular pattern. It was traveling at a very high rate of speed and passed directly over my truck. It would have to be about 1500 - 3000 feet elevation. It was black triangle. It stood out because it was below the clouds and I could see the outline pretty good because of the contrast between the lighter clouds and darker traingular object. The lights were white and circular with one at each corner of the triangle. I saw it for about 15-20 seconds. There was also a plane of some sort following what looked to be around the same altitude. It was traveling considerably slower than the first craft. There was also no blinking lights that I coud see on the black triangle.I attached a drawing. It was quickly down but it looked pretty much like that. It looked to be a equilateral triangle.