What am I legally entitled to if my husband does not have a will in the event of his death?

we have many assets, property in both our names He runs and owns a successful cabinet shop, my name is on the buissness account. He owns 16 muscle cars estimated worth $800,000 one of them is in my name. What of the rest? Do I own them in the event of his death or will these assets go to a probate lawyer? We also have grown Sons I have one, my husband has three. whats in it for them? Are they entitled to any of these cars?