(Cary, NC, Holly Spring Rd & Cary Parkway) At around 7:10 pm my wife & I were driving on Holly Springs Rd. We spotted a circular object with 5 lights. It was flying just above the trees & moving in the direction toward US1. The lights underneath were toward the outside of the object & spaced equally distant from each other. We turned on Cary Parkway & could no longer see it. It was moving very slowly. I estimate the size to be approximately 30 feet in circumference. I know more people had to see it because traffic was pretty heavy.