I believe you make a claim with the at fault party’s insurance under the private property portion of their policy. The states that I have lived in (MI, AZ, FL) have all required this so if they have insurance you should be okay there. Might be a bit of a fight depending on which insurance...
the dealer stock order that I have (Lariat ER) is stuck in production as well. Went through a similar issue with my current powerboost when it was built at the end of last year, produced and sitting in Dearborn waiting for parts.