2. As for the reservation, I don't need to enter the credit card information when I use national or Ben.
3. Cards that don't have to be settled in US dollars. However, the visa card settled in RMB will make you lose money on the exchange rate, and sometimes it may be quite powerful. For the card settled in US dollars, you only need to buy US dollars when you repay.
Basically, all car rental agencies require the main driver to authorize the deposit with his credit card. The second letter says that you can change the driver's information, for example, someone with a US dollar credit card.