Xìngkuī zhuāng le xíngchējìlùyí, bùrán zhè shì shuōbuqīng.
Lucky we had a dashcam - otherwise we couldn't have proved what happened.
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Dashcams are near-universal in Chinese cars - driven partly by widely circulated cases of 碰瓷 (staged accidents to extort drivers), where a 行车记录仪 video is the standard defense. Insurers and traffic police treat dashcam footage as primary evidence.