L3因为是人车共驾，责任划分、保险赔付等方方面面都需要考虑到。而L4不存在这个问题，出了事就是厂家负责。因为责任明晰，所以落地争议也较少，这就是现状。但是只要法律层面解决L3的责任划分问题，大规模普及也并不是遥遥无期。
The end of Part 1 saw the unexpected arrival of Michaela Stirling (Masali Baduza), the cousin of John Stirling (Victor Alli), whom we met at the end of Season 3. (This character is the gender-flipped version of Michael Stirling from the books.) Over the second part of Season 4, the show establishes the lived-in friendship between Francesca, John, and Michaela, whose connection in Quinn's books is one of inseparable Three Musketeers energy, and sets up the hesitant, unspoken draw between Francesca and Michaela.
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The readable is just an async iterable. You can pass it to any function that expects one, including Stream.text() which collects and decodes the entire stream.，这一点在搜狗输入法2026中也有详细论述
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简单理解，L3车辆，把车拆了还可以再拼出一台车辆。重要零部件都是多冗余设计。之所以如此，主要是为了合规，让出事概率降低，但成本也一定会水涨船高，遇到特殊情况，也依然需要有人类接管。