They write the following: Aufgrund der schwierigen Spurenlage vor Ort kann derzeit weder ein technischer Defekt noch eine vorsätzliche oder fahrlässige Brandstiftung ausgeschlossen werden. Hinweise auf mögliche verdächtige Personen im Umfeld ergaben sich für die Polizeibeamten nach ersten Ermittlungen in der Nacht keine.
Not that my German is that good, but I understand that says that due to difficult scene of the fire, neither a technical defect nor deliberate or accidental arson could be eliminated as the cause of the fire.
That does not fit HHO's narrative though, so he quickly throws in a few other links for good measure. I believe Elon Musk did address this issue on many occasions.
Also, if a petrol engine with a petrol and air/gas mixture catches fire, it is far more likely to "explode" than lithium batteries, which would burn at a fairly high intensity.
This was discussed in detail at the beginning of this very thread.
