近日，特斯拉CEO埃隆·马斯克对美国政府的公务差旅费用进行了大幅削减。作为全球最大的单一差旅买家，美国联邦政府的差旅体系复杂且规模庞大。此次削减主要针对个人支付账户（Individually Billed Accounts, IBA），即由个人持有的信用卡，用于报销公务差旅费用。

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