The cheapest car insurance, period, will likely carry the minimum coverage required in your state. In most states, this is liability insurance only, which covers property damage and medical bills for others due to accidents you cause. Some states also require uninsured and underinsured motorist coverage, which pay for your injuries or damage if an at-fault driver doesn’t have enough insurance.
You worked hard for decades, you retired, and you purchased the luxury car of your dreams. Why should you have to drive around extremely cautiously just because you made an investment in a classic car and your insurance company does not understand its true value? If you purchase Chubb insurance, you and the insurer can agree on how much your car is worth to you rather than having to settle for the market value of the vehicle if it is stolen or totaled.