If The Sun reports it, then you know it will be a non story.
JayUtah is correct. It IS a reflection of a dial, most likely the speedometer from the car dashboard on the window of the car she was travelling in.
Also if you notice, the 'UFO' is at the same angle & is at the same size in both shots.
I have done a lot of photography myself & through general trial & error, these things crop up.
Obviously The Sun, being The Sun, likes to sensationalise on a total non story & have gotten overly excited over a reflection.
It's pathetic really.
I take it that The National Enquirer is an onerous rag then, the American equivalent of The Sun??
Andrew Brown.