【美股盘前】现货黄金一度跌破4900美元，金矿股走低，哈莫尼黄金跌4.2%；马斯克：Cybercab将于4月开始生产，不配备踏板和方向盘；AppLovi...

Group 1 - Major stock indices are experiencing declines, with Dow futures down 0.10%, S&P 500 futures down 0.27%, and Nasdaq futures down 0.59% [1] - Gold mining stocks are falling ahead of market opening, with Harmony Gold down 4.2%, Newmont down 3%, Sibanye Stillwater down 5.8%, and Barrick Gold down 2.4% [1] - AI application stocks are also declining, with AppLovin down over 2%, SAP SE down nearly 3%, and Palantir and Snowflake down over 1% [1] - Chinese concept stocks are seeing gains before market opening, with Alibaba up 0.80%, Pinduoduo up 0.53%, and Baidu up 1.45% [1] - Spot gold briefly fell below $4900, currently down 1.40% at $4922.2 per ounce, while spot silver is down 2.32% at $74.6 per ounce [1] Group 2 - SpaceX and its subsidiary xAI are reportedly participating in a highly classified Pentagon bidding process to develop voice-controlled autonomous drone swarm technology, as part of a $100 million challenge initiated by the Department of Defense [2] - Elon Musk announced that the Cybercab, which will not have pedals or a steering wheel, is set to begin production in April [2] - Apple has announced a significant upgrade for Apple Podcasts, introducing video podcast functionality to enhance its presence in the video podcasting space [2] - Danaher is nearing a deal to acquire medical technology company Masimo for approximately $10 billion [2]