Really depends on how throughout the investigation is/what hardware survives the crash.

Depending on the surrounding circumstances of the incident, it would probably not even be considered a possibility because fatal car crashes are so common that "just another accident" is the most probable, and thus most usual answer.

That's also the reason why Michael Hastings death is so controversial to this day [0].

[0] https://en.wikipedia.org/wiki/Michael_Hastings_(journalist)