Can a creditor seize a 529 plan or 401k for an auto deficiency judgment?

Generally, a 529 plan is protected from creditors in most states, so it cannot typically be seized for an auto deficiency judgment. However, a 401(k) plan is usually also protected under federal law from creditors, but the specifics can vary by state. It's important to consult with a legal expert or financial advisor to understand the protections applicable in your jurisdiction.