Chinese automaker BYD has formed a partnership with self-driving startup Momenta to develop “highly intelligent driving systems” for commercial vehicles. The two companies established a RMB 100 million ($15.7 million) joint venture in Shenzhen in late November, it was announced on Monday. Further details were not provided, but information from Chinese business research platform Tianyancha showed that EV giant BYD owns a 60% stake in the Shenzhen-based JV. Momenta has been backed by auto majors including General Motors, Toyota, and SAIC. [Momenta statement, in Chinese]