AI 服务暂时不可用，以下为来源正文，待恢复后补全翻译。
Self-driving taxi service is advancing around the world.
待翻译：Pony.AI Has Plans For 4,000 Robotaxis Outside China
文章摘要
AI 服务暂时不可用，以下为来源摘要，待恢复后补全翻译：Self-driving taxi service is advancing around the world.
待翻译：Pony.AI Has Plans For 4,000 Robotaxis Outside China