两家主要西方汽车制造商宣布了新款旗舰车型，以应对来自中国挑战者的竞争。
Two major Western car makers announced new flagship vehicles as they vie to keep up with Chinese challengers.
特斯拉发布了其Roadster，这款车早在近十年前就首次被宣传；而保时捷则在其新任首席执行官的领导下首次亮相新车型，该首席执行官曾誓言要在多年销售下滑之后扭转公司命运，尤其是在中国市场。
Tesla unveiled its Roadster, first touted almost a decade ago, while Porsche revealed its first car under its new boss, who has vowed to turn the automaker’s fortunes around after years of declining sales, notably in China.
然而，这些新车型预计要等数年后才能推出，这与中国汽车制造商形成鲜明对比——据麦肯锡称，中国车企已经“大幅缩短”生产周期，从概念到上市仅需约24个月。
However, the new models are not expected for years, contrasting with Chinese carmakers that have “slashed” production times, going from concept to launch in roughly 24 months, McKinsey said.
中国产量的激增促使欧洲和美国设立贸易壁垒，但这些措施可能效果有限。正如路透社专栏作家所言：“中国汽车在美国道路上出现只是时间问题，而非是否问题。”
Soaring output in China has pushed Europe and the US to throw up trade barriers, though those could prove ineffective. “Chinese cars on US roads is a matter of when, not if,” a Reuters columnist argued.