Is the driver the owner of the truck or does he work for a company?

If you think he may just drive the truck for a company, I would take the insurance matter up with his company and keep him out of it and let his place of work deal with him.

If he is the owner of the truck and just being a tool, I would definitely seek legal advice in regards to this. It is definitely obvious if your passenger side of your car is wrecked that the other driver was at fault.

All the best hun. I hope things are worked out for you before bub arrives

ETA - Berenice beat me to it! So yeah, everything Berenice said