Youku video. The film is jointly invested and produced by Youku Video Network Studio. All audio-visual rights, transmission rights, and broadcast rights belong to Youku Video and can be viewed on the Youku Video website. "Off Road Book" is a self-driving adventure documentary video program produced by the car review program "Carrot Report" in 2016. Hosted by Chen Zhen and Li Yibin. "Off Road Book" has aired 11 seasons as of January 2019, with 3 to 6 episodes per season, and each episode is about 30 minutes long.