I always appreciate your comments Trooper, they are always well thought through.
I’ll preface this with it all being entirely hypothetical and my opinion only.
I recall, in the very early days of SM going missing, a local resident shared footage they had taken of someone driving extremely fast down the dirt roads in the area. The resident had been walking and, seeing the fast car approach, had taken their phone out of their pocket and filmed the hoon out of frustration and anger. They shared the video simply demonstrate that some people drive erratically down those bush tracks and to explore the possibility that SM had been hit and was lying down the side of a track somewhere.
What if SM had similar frustrations? Perhaps she saw the car hooning towards her and takes her phone out to video.
PS sees that she is videoing and realises that further evidence of him driving dangerously will not bode well with his already impending court case. Maybe, as others have noted, he is on a restricted license and isn’t even meant to be driving.
Panicked and enraged (possibly still drug affected from the night before, but not necessarily), he either swerves, doubles back or stops, but either way, he has an altercation with her - he attacks her in some way, hitting her with the car or physically chasing her down. Either way, the video is still rolling and his
deliberate attack is sent to the cloud, providing the irrefutable evidence that we are all curious for.
If he hit her with the car, it may explain why the police were initially asking about information about a damaged car.
He does not leave the scene (giving police plausibility to refute the “hit and run” scenario), but instead loads her into the back of his car.
A deliberate attack such as this may have been enough to warrant the murder charge, however, if we aren’t satisfied that is the case, perhaps she was still alive at this point, unconscious, which is possibly substantiated by her watch data. Further panicked about the situation he has found himself in, he ends her life in the back of his car, resulting in a substantial about of blood / dna in the back of his car (the has been talked about in other forums but is unsubstantiated).
Either way, her heart stopping is substantiated by her watch data, giving LA the confidence that she died at Mt Clear at 8am.
A scenario such as this would offer a motive and sufficient evidence. Again, just my opinion and entirely hypothetical.
As you say
@Trooper , all will be revealed in time!!