And the hundreds of billions of dollars of unrelated spending to go with it.
One thing uniquely BMW is that it's possible to get locked inside some models -- some late-model BMW door locks have no mechanical override. (They ditched that along with the spare tire and the oil dipstick.) If the electrical system combusted, she may have had no way to get out. That is, if she was conscious at that point. However, we may never know for sure because this investigation seems about as screwed up as the Natalee Holloway investigation in Aruba, another third-world banana republic.
I've been puzzled that NHTSA never became interested in the BMW door locks because it seems to be an obvious safety flaw.
So my theory is that the bmw heated windshield washer jets heated the window washer fluid which ignited. The window washer fluid was likly not standard BMW recommended washer fluid. :-)