A very large boomerang shaped object very rapidly approached us,hovered less than 100 ft over a house then accelerated off into the norther horizon.

This happened 22 years ago, but it was very frightening and remains vivid in my mind.  While driving down a fairly busy street(now 4 lanes), a friend and I (both 17) noticed a very large black boomerang shaped object rapidly approaching. At first, we both thought it was a plane about to crash, but then it just stopped in mid air and hovered less than 100 ft. over a house, giving off a low humming sound. My friend was driving, and it scared us so badly she just stopped her car right in the middle of the street.  We were so scared that we could not speak or move, we just sat there staring at this huge object with approx. 8 lights around its bottom perimeter.  I just kept wondering why there was not anybody else on that street at that time, there was usually more traffic. It seemed like everything just stopped and stood still.  It then took off at an incredibly high speed until it disappeared in the Northern sky. Since we were only two blocks from my parent's house, we drove over there and ran inside crying because we were so scared. My mother called the local radio station to see if there were any other reports, but we were the only ones who reported it. It was such a strange thing that it left me asking "did I just see that?"