How much can we really infer from the details in this case?

On their own, those details raise questions, but they do not settle whether the death was suicide or homicide. A jack under a car is unusual if there was no flat, yet without the full scene documentation we cannot tell what it means.

The reported lack of a recovered weapon and possible disturbance of the scene matter too, but their significance depends on evidence not included in short public summaries. I would separate confirmed findings from interpretations, and avoid treating any single odd detail as proof.

The shifting descriptions of the ruling are worth pinning down first. A death being handled as a homicide at one stage, an examiner later classifying it as undetermined, and an investigation being described as closed as suicide are not necessarily the same thing. The exact wording and dates would help.

If records become available, the most useful items would likely be the final medical examiner determination, investigative summaries, and documentation of the scene and vehicle. Until then, the public account leaves real gaps, and it is hard to make a confident call.

I’d be cautious about building a theory around the car. Open doors and a jack can look suspicious in isolation, but there may be ordinary explanations that the available account simply does not include. The same goes for the reported movement of the body.

For now, the soundest conclusion is that some details remain unexplained in the material described here. More records could clarify what investigators knew, but missing or unavailable records would not, by themselves, show that a particular theory is true.