Big As House, Rows of Brightly Lit Windows, Silent

While driving at night, my husband & I first noticed a bright light in the sky that was moving slowly. As we kept on driving we could see it get closer. Suddenly it appeared at treetop level, it was as big as a house, with very bright lights coming from rows of windows. They were so bright we couldnt make out the exact shape, but seemed to be saucer or disc shaped. It was completely quiet, it seemed to just float slowly over the treetops. It passed directly over our vehicle, across the road, over a golf course & just kept on going.. There were other cars on the road that had to see it too, we just kept on driving, my husband stuck his head out of the window as it passed over, he saw colored lights on the bottom. I was so scared that I literally got in the floor of the car & started praying.
Date is approximate.  PD