What does it mean that the driver needs to buy out the damaged car himself?

The sedan chair driver needs to buy out the damage of the vehicle himself, that is to say, he needs to pay for it himself.

If the car is checked, the insurance you should buy is all risks. In this case, the subsequent repair process of the damage is that the insurance company takes money, but if the insurance is not bought, or the insurance is not all-insurance, the individual or the transportation company needs to pay.