Another thread brought out some difference among states in insurance requirements. Some states - Florida and I think Minnesota - require renters who are in-state residents to provide proof of liability insurance or purchase theirs. Come from out of state and no proof is required. Some CA agencies do this too. Even if they don't, if you get pulled over you risk arrest due to CA's liability insurance laws.

I recently found an interesting situation when renting in North Carolina. They said I could take the car to South Carolina, but if I took it to Tennessee, instead of unlimited mileage, I was limited to 200 free per day and they had to specifically note on the contract that I had authorization to take it to TN. The agent said if you get pulled over in TN with a NC rental car, the trooper can confiscate the car even if he calls the rental agency and the rental agency says it's OK with them that you're in TN. His advice: "Be real nice to Tennessee troopers."

Illinios and New York are required to provide CDW and limit a renter's liability to $100 or $200.

Any others?