3 lights triangularly spaced out then was able to see the black triangle

Was driving on the highway northbound in the passenger seat when I looked to the right and noticed the three white lights in the sky but not too high up. At first glance I assumed they were plane lights until we got closer and I saw how low it was and then noticed that I could see the shape of a floating black triangle which seemed to have tried to blend in with the night sky. As we drove past I then saw an actual plane in the distance which made me realize that the object was just hovering and not moving due to me driving past it and seeing the actual plane in the distance showed me the difference between the two and seeing the plane in the distance move past the object as well and it stayed hovering and didn’t move at all as we continued to drive past it.