UFO Fleet near Winstar Casino in Oklahoma

We saw from 12 to 15 very dim orangeish spheres flying low, less than 1000 ft off the ground, near the state line between Texas and Oklahoma, we were driving northbound on I-35, it appeared that each sphere had no more than 4 meters in diameter and produced no sound at all, none of them had any lights, all the drivers reduced speed significantly to take a look at the objects, my wife even took some footage but we were disappointed because the objects can't really be appreciated in their entirety, it was and exciting experience, though.