the object was hanging in the air above us for about 15-20 secodns and flew away very slowly...We saw it while we were driving on highway. It was up in air above us, in front. It was floating in the air. We thought it was hellicopter. We approached until the object was above us and we parked our car aside on the highway. We got out and started to look at it. We didnt see it clearly because it was dark after sunset, but we could see that it was darker against the sky and was triangle shape (around 9pm) had larger yellow light in center and smal light on point and red and blue light on the end corners of the triangle. We didnt hear hellicopter sound and didnt know what was that. We assumed it was not a hellicopter. It floated there for about 15 or 20 seconds and moved away towards where we were coming from. And in its behind we could see bright light in center (on tail side) and red and blue slowly glowing on each corner of its tail side. We watched it until it was gone too far that we could see it anymore with our naked eye. We dont know what was that. Itdidnt look like a plane or hellicopter. It didnt have a jet or some kind of sound. What do you think it is?((NUFORC Note: Witness elects to remain anonymous. PD))