I was headed home from work, halfway through my 1 hour drive home. It was a little before 5pm, and I was just driving down the highway, minding my own business, jamming out to some tunes. I look off to the left, and I see this object hovering above this farm/field area of land. I notice it's actually moving with the speed of my car, and it started crossing over the highway. It had to have been less than 100ft above the highway, and I drove right under it. This thing looked about the size of a car, and it just started flying off towards the mountains. That's when I couldn't see it anymore.