My car was burnt down in the countryside

Hello, my car was burnt down during the night without me knowing. It was stuck on the side of the road because of slippery road and I decided I would call towing truck next day.

Well, now there is no reason to do it.

What can I do besides reporting it to the police and posting about it on social media? I could ask nearby company for camera footage, but nobody else here has any cctv.