My wife and i were driving on the freeway when i seen what i thought at first was a white parachute, or a strange shaped balloon hovering about 300ft above the freeway. as we got closer we could see a teardrop shaped top portion with an opening about 25~30ft long, at the tip of the teardrop shape was a white cross shape that was about 5~8ft long. it hovered and did not seem to be moving in any direction, or descending. my wife tried to take pictures with her phone, but nothing appeared on her screen, even though we could both see it with our eyes. as we drove under and past it i tried to find a exit to turn around and see it again. as we turned turned off the freeway, we lost sight of it, and it was gone afterwards. we circled back and went to the same point on the freeway, but again, did not see it again. i asked my wife what she thought it looked like? she said a white cross on a white rosary, i said a white cross hanging from a white necklace, or teardrop shaped loop? was definitely solid, not a cloud, and didn't look like any kind of balloon i have seen before? i'm a spiritual person but not religious, so kind of strange to see something like this?