The last time I was in Cabo, I had a car rental reservation... much to my shock and dismay, I was FORCED to buy their insurance or I can't have the rental. They didn't care if I had car insurance rental with my credit card company (which I verified and do have coverage in Mexico). I had no choice but to pay an arm and leg to get the car and get going on my sojourn.
What can I do the next time I go to Cabo and am not burned again. I did call my regular car insurance company here in the USA - and they said they can give me Mexican car insurance only on my car if I drive down to Mexico, but not on rental cars.
Thanks for all you can advise me.