Ultimately, the most rigorous traceability solutions, including QR codes and microchips, won't be useful if people don't actually check them as a condition of making their purchases. Imitators can simply counterfeit QR code labels, for example.
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Video from the incident shows a large group of people following police officers, showering them with snowballs and jeering, as they retreat to their vehicles outside the park. Videos also showed officers shoving at least two people to the ground while getting hit from all directions by snowballs.，推荐阅读同城约会获取更多信息
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。