At Chicago airport, I waited over an hour for the shuttle bus. When I called to ask, the attitude was poor. We finally got the car after 9 PM. The rental company is much farther from the airport compared to others. The return process was normal; we filled the tank and washed the car as instructed. Unexpectedly, I received an additional charge six months later. I had purchased the full insurance, the most comprehensive one, and there were no incidents or violations. This company is terrible. Remember the old saying: 'You get what you pay for.' Be cautious when choosing a rental company.