What are my options for rental car insurance?

Question by Kevin Chisholm: What are my options for rental car insurance?
I am renting a car for one month from Hertz. Their insurance is very expensive (at $ 25 per day, it adds $ 900 to my costs). I have already asked my credit card company if they offer auto insurance for a rental car. Do you have any suggestions on other options for inusuring a rental car for one month?
I do not own a car, so I do not have any personal auto insurance. This rental will be in the United States.


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