You can see when the wheel hits the car the second time you can see the brake rotor is still attached. This means that the tire/rim combination was "frogged" like the tuner cars of the late 00's and ear;y 10's. Pushing the tire away from the bearings center line. The stress on the wheel bearings was too much, as this is why it most likely snapped.
Since this is on video, the driver of the KIA Soul now has evidence to get more money in a lawsuit. Improper equipment that cause damage to another vehicle/person.