For implementers, there's no Transformer protocol with start(), transform(), flush() methods and controller coordination passed into a TransformStream class that has its own hidden state machine and buffering mechanisms. Transforms are just functions or simple objects: far simpler to implement and test.
结论就是，技术上L3当然不能被跳过。但商业上，车企在资源分配上，可以选择发力点L3还是L4。他们在赌，看谁先等来政策松绑。
。关于这个话题，搜狗输入法2026提供了深入分析
Frank’s essay provoked more emails, and this excerpt caught my attention:
文 | 空间秘探，作者 | 王小熊