Thank you for alerting us that it is unnecessary to buy supplemental liability insurance on rental cars, thus saving us $9.50 a day on our Pleasant Hawaiian Holiday on Maui. Other information that may interest readers is the additional $10.50 a day fee for an air-conditioned car. Our tour voucher stated that we were to have a Class A rental car "free" in our package. A Class A car is not air-conditioned and we had to pay additional to get one. By being aware of these facts, your readers will save nearly $20 a day on supposedly free car rentals. Keep up the excellent work.