I was driving home one day from the gym when I noticed a mirrored-like sphere floating above my neighborhood about 30 feet above the rooves to my left. As I drove past it it seemed to follow my path parallel and at one point I drove underneath it. At its closest altitude it was approximately 50 feet above me. It made no sound, left no emissions, and had no identifiable characteristics. It appeared to have a mirrored finish but didnt reflect surrounding objects. After passing over me it continued up to the hills until disappearing behind them. I observed this object for approximately 5 minutes.