Four lights in a stright line hovering in a stationary position.

My family and I were driving east on Douglas Rd. just before Grape Road in South Bend, near Mishawaka.  It was snowing and very cold and windy.  
About 1/2 mile before Grape Rd. I saw 4 white lights in a straight line in the sky just to my right (south).  At first I figured it was an airplane heading to the airport, but then I realized the lights weren't moving--they were just staying in one place.  
I pointed it out to my wife and kids and they all saw it too.  We couldn't figure out what it was.  As we got near it, it finally began to move to the west in a straight line.  It was definitely not a helicopter because the lights didn't match any that I know of, and I put my window down and didn't hear anything.  The only thing we could guess it might be was a drone, but for a drone to be flying in that kind of weather just doesn't make sense.  
It was probably 200 yards or so off the ground.  I didn't see any sort of the "typical" saucer shape, nor did it fly off at incredible speeds, but we couldn't identify it, therefore to us it remains a ufo, and I wanted to report it for what it's worth.