数据显示，2025年中国自动驾驶领域总投入预计达700-750亿元，同比增长40%。但整个中国汽车行业利润率只有4.1%，处于历史低点。利润增长赶不上研发投入增长，尤其对于还在亏损中的车企来说，L3还是L4？曾经是两者都要、循序渐进，现在成了二选一的选择题。
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As of publication, the letter has over 450 signatures, almost 400 of which come from Google employees and the rest from OpenAI. Currently, roughly 50 percent of all participants have chosen to attach their names to the cause, with the rest remaining anonymous. All are verified as current employees of these companies. The original organizers of the letter aren’t Google or OpenAI employees; they say are unaffiliated with any AI company, political party or advocacy group.