3 white blinking lights in triangle formation the size of multipe football fields.Driving West on 630 threw Little Rock, Ar, we observed 3 white lights flashing to the north. It was moving parallel with us. It looked to be hundreds of yards long, a few thousand feet up in the air. We were traveling at 70 mph, and the lights stayed in formation as it moved to the west. At the location where IS 630 ends at IS 430 the object was no longer to the north, but due west in front of us. It made no noise, and seemed to be a triangle that covered a large area in the sky.