B - Canada C - Canada E - Export K - Special Order M0 - Show Car M9 - Sunroof Car Q - Public Relations - Exec.Lease T - Chry. Lease
It depends at times on the model year and package codes actually. Most AARs are M0.... cars, but it just means "sales bank" not show car as one example.
In most cases with cars with a letter VON prefix you need to know the Y codes to decifer the meaning.