The idea that an existence of or lack of damage to the car at any particular point can somehow create "reasonable doubt" for this particular crime is an absurdity, since the crime wasn't one of someone damaging a car. If the state never proves the car was already damaged? So what. Not trying to be rude, but whether or not the camera could answer that question really isn't that big a deal in this case, because it's just a minor side point.
What has to be proven beyond a reasonable doubt is the elements of the crime according to statute. Not any of the particulars of the state's theory about exactly how it happened, but rather the general belief beyond a reasonable doubt that this crime happened and that EA did it. The last thing the jurors will hear, before deliberating, will be the judge itemizing those things the state had to prove, so they won't inadvertently try to make the task list bigger than it is. No details of the state's theory will be on that list.
And yep, the state has yet to begin to lay out the evidence to show she was IN HIS TRUNK. They've already laid the groundwork to show that would have been a crime, however, with witness after witness already having said that she never would have been there willingly.