每经编辑｜金冥羽 11月12日，多名网友发布视频显示，湖南张家界天门山国家森林公园景区，一辆汽车在"天梯"上进行爬台阶挑战，结果从台阶上溜下，还撞坏了护栏。 据极目新闻，12日下午5时许，一名在现场的网友称，事发于当天中午，她看到那辆车爬台阶没有成功，结果将护栏撞开了一个口子，"后来停在那里两个 小时没动"。当地一名导游也向记者证实，当天因为天门山"天梯"要进行这个汽车活动，游客不能从这里上去。 据潇湘晨报，此项目为汽车品牌举办的挑战活动，景区只是提供了场地租赁，意外并未造成人员受伤。 公开资料显示，天门山"天梯"全长近300米，垂直落差150米，共有999级台阶，是通往天门洞的主要途径。有网友认为，把游客走的"天梯"腾给汽车做测 试，不但影响了游客的旅游体验，还对景区设施造成了破坏。 据了解，该段阶梯并非第一次有汽车品牌在此做攀爬演示，此前路虎曾挑战攀爬成功。2018年，路虎某车型穿过99道弯、攀爬999级台阶，以9分51秒的成 绩打破天门山"99道弯"纪录，并成为全球首款攀爬中国天门山天梯的车型。 汽车后溜撞坏护栏 图片来源：极目新闻 天门山国家森林公园工作人员对记者介绍，12日和13日，因为要进行奇瑞汽 ...

Core Viewpoint - Xiaomi's SU7 Ultra production model is currently challenging the Nürburgring track, following its prototype's record-setting performance last year, raising expectations for its capabilities in the automotive market [4]. Group 1: Performance and Records - The prototype of the Xiaomi SU7 Ultra previously set a record of 6 minutes and 46.874 seconds at the Nürburgring, making it the fastest four-door car at the track [4]. - The SU7 Ultra has also set fastest lap records at several other racetracks, including Zhejiang International Circuit and Chengdu Tianfu Circuit, showcasing its strong performance credentials [4]. Group 2: Technical Specifications - The SU7 Ultra boasts an impressive 0-100 km/h acceleration time of 1.98 seconds and a maximum power output of 1548 horsepower, powered by a super three-motor system consisting of two V8 motors and one V6 motor [6]. - A recent OTA update introduced a "ranking mode" that restricts the full power output based on track performance, allowing only about 900 horsepower unless specific lap times are achieved [6]. Group 3: Customer Engagement and Feedback - Xiaomi has acknowledged customer concerns regarding the power restriction feature and has paused the update, indicating responsiveness to user feedback [6]. - The company has offered an option for users who have not yet received their vehicles to modify the carbon fiber front hood, along with a gesture of goodwill by providing 20,000 points for those who choose not to change their order [10].