Car rental services in the US are highly developed. We originally booked a 7-seater van online, but upon arriving at the Los Angeles branch, we found the trunk was a bit small. They allowed us to choose an 8-seater GMC with a bigger trunk and more space. They only charged us an additional insurance fee of around $150, and upgraded our vehicle for free. During the rental period, we had a few issues: a scratch, a flat tire, and a broken window from a thief. Each time, we called the rental company and they directed us to the nearest service point to replace the car for free, without any hassle. If this were in our home country, it would have been a much more troublesome experience. The service attitude was also excellent. Overall, this international car rental experience was very satisfactory.