Sighted large plane gray hovering low then vanished

Driving east toward n dixie I saw an almost stationary large gray windowless plane with no visible engines or propellers almost stationary and low altitude. I photographed it on my iPhone through my car window but in the photo the plane is missing. I tried a second time and the second photo also captures the sky where I saw the plane but it is not visible. I lost sight of the plane while passing a building and then it was gone. I consider myself a skeptic. But I saw an object that I cannot explain.