About the only way you can get that (especially outside of Canada and United States) is to purchase the most inclusive CDW the car rental company offers i.e. the package with zero payable. Note that CDW is not 'insurance', it's a waiver of costs and expenses the rental company offers for a pretty big price. On the other hand, you can pretty much eliminate risk... don't shred the tires going over security gates though, that is not covered.