Stay in touch with your insurance company and if you are getting nowhere or if you have personal exposure consult with private counsel.

What's the S.O.L for filing lawsuit in superior court against employer who didn't carry workers' comp insurance

You should consult with a lawyer in that jurisdiction.

This is a conversation you should have with your lawyer.

What do we do?

Contact a car accident lawyer in your area.

Who do I hold responsible

I agree with the other two gentlemen.

You will have to research GMC airbag lawsuit attorneys or top tier injury law firms and ask about their experience in handling cases similar to...

What can i do to defend myself? What should i do to avoid paying a lot of money to the other party?

If you have sufficient limits of liability your insurance company will handle it without you having any personal exposure.

Your situation is a bit more complicated than the question presented. Consult with a DUI and car accident lawyer to fully understand your rights

Can I get a Attorney and Doctor

You need to speak with an injury lawyer in your area immediately.

Can you be notified by email if your are being sued or severed with papers or do they have to deliver them in person

Ask a lawyer in your area to explain the situation to you.