信用卡附的保險大概都只有包括collision damage waiver (CDW/LDW)車體險，
就是指有保自己的車，你撞的人、物、車都不賠，多數是secondary，很少數是
primary，例如AMEX的付費或UA的visa signature卡，意思指如果到時候理賠時
，要由自己的保險先付，不行才能用信用卡附的車體險，不會影響信用。

可以自己保險賠對方，然後金額不夠，信用卡保險賠自己租的車。

liability強制責任險很少有信用卡有包括，都是要用自己的，先請教自己的
保險公司是否有含括租車。


贈送保險的信用卡

Citi Forward Card
要打電話問cover哪種車型

Auto Rental Insurance
You're automatically covered when you reserve and rent an eligible vehicle
with your Citi® card and decline the car rental company's collision
loss/damage waiver insurance.

Emergency Assistance Services
You’re protected when you’re traveling in the U.S. and abroad. Emergency
Assistance Services include medical and legal referrals, lost luggage
assistance, translation services and more.

Chase Sapphire系的租車保險都是Secondary to your personal coverage.
租車時記得decline CDW，否則信用卡保險無效。

Chase Sapphire Preferred Benefits
http://milecards.com/2063/chase-sapphire-preferred-full-benefit

Secondary Rental Car Insurance
http://www.bargaineering.com/articles/credit-card-rental-car-in