Was it your car?
If it was, simply saying "prove it was my car" won't get you far - for it to be someone else's, the operative would have had to take a photo of your vehicle at 18:34:49, run over to another vehicle and take a photo of that just 10 seconds later, then run back to your car to snap a further picture some 15 seconds later. That simply doesn't sound at all credible.
If you are prepared to fight this all the way (potentially to court), there's an argument to be made that they have not proved the vehicle was there beyond the relevant consideration period.