Hertz - Insurance in Mexico

We're renting for the 1st time in Mexico (Cancun) and want to know what you all suggest as far as insurance. I never take ins. when renting in the states because of coverage from using my cc as well as business ins coverage. This is a personal trip so the business ins. is out. Is Visa/MC coverage good enough in Mexico. I've been told if you don't have "Mexican ins." and you're in any kind of accident, they can hold you in jail until they determine who is at fault. Any truth to that? What do the rest of you do if renting there on personal time. Thanks!

We're renting for the 1st time in Mexico (Cancun) and want to know what you all suggest as far as insurance. I never take ins. when renting in the states because of coverage from using my cc as well as business ins coverage. This is a personal trip so the business ins. is out. Is Visa/MC coverage good enough in Mexico. I've been told if you don't have "Mexican ins." and you're in any kind of accident, they can hold you in jail until they determine who is at fault. Any truth to that? What do the rest of you do if renting there on personal time. Thanks!

Our situation was a bit different, in which we rented from SD and didn't read the print on the contract that the rental car was not to be driven across the border. So of course we get pulled over in Tijuana for running a yellow (although there were about 4 cars behind us doing the same). The cops were going to take us to the station for running the light AND for not mexico insurance. Talk about scary scary situation. We were begging and pleading, to no avail (esp since they couldn't really understand us). Finally, they agreed to accept something in return (aka bribe), so they took us to an alley. We only had $25!!!! They saw it, & told us they would just take us to the station. I was begging more, told them we would just turn around and leave. They finally took the $, I was so grateful, & vowed to never drive to Mexico again!

So a word to the wise, make sure you are insured!!! They are very corrupt and you really don't want to get into anything with them.

I called Visa Credit Card before my trip to Mexico. They were helpful; the first CSR transferred me to Benefits CSR who answered some questions but not all; then that CSR transferred me to another CSR who was well versed on the car insurance benefits that Visa offered. She also told me the internet link for me to print the benefits policy. I was covered by the credit card. When I got to Hertz San Diego Airport the Hertz agent convinced me to take the Mexican insurance based on problems we may encounter if we get pulled over or into an accident. At $25/day I thought it was worth it. You should see the paperwork they give you.
Note: Insurance is not paid per 24-hour period but for the entire day (e.g. you rent from Monday at noon until Wednesday at noon - that's 3 days of Mexican insurance - Mon-Tues-Wed; for American Insurance that's only two days).