There are many websites for Douyin car videos. Here are some recommendations:

- Miyu.com: This is a well-known video material sharing platform in China. It has a wealth of car video materials. From luxury cars, sports cars to home SUVs, high-definition materials of various models can be found here. In addition to regular car driving shots, there are also a lot of stories behind car design, manufacturing, exhibitions, etc. Its website has a user-friendly interface and powerful search function. Users can easily find the materials they need, and most of the materials support free download.

- Pexels: It is famous for its high-definition and free video materials. In terms of car video materials, Pexels provides car shots in various scenarios, such as highway driving, mountain off-road, auto show exhibitions, etc. It is particularly worth mentioning that Pexels' materials are all CC0 licensed, which means they can be used for free commercial purposes without attribution.

- Videvo: This is a free video material website with a wide variety of car video materials, especially some shocking shots such as car events and team driving. In addition, Videvo also provides some car-related sound effects, such as engine start, tire brake sound, etc.

- Mixkit: This is a free high-quality video material library. The car video materials here cover various car scenes, such as garages, showrooms, streets, etc. Moreover, most of Mixkit's videos have a strong sense of art, which is suitable for making creative Tik Tok videos.

There are many sources of materials for Tik Tok car videos. You can choose the appropriate website and materials to create according to your needs and creativity.