Versions of Iowa Code 321.66 - Duty to hold vehicles on LawServer 2023 Iowa Code 321.66 – Duty to hold vehicles 2022 Iowa Code 321.66 – Duty to hold vehicles 2020 Iowa Code 321.66 – Duty to hold vehicles 2018 Iowa Code 321.66 – Duty to hold vehicles 2016 Iowa Code 321.66 – Duty to hold vehicles 2014 Iowa Code 321.66 – Duty to hold vehicles. 2009 Iowa Code 321.66 – Duty to hold vehicles