Nio has held exploratory talks with Mercedes-Benz for a tie-up that would see the German automaker invest in the Chinese electric vehicle startup in exchange for technology, two people with direct knowledge of the matter said. Nio's founder and chief executive William Li discussed the potential collaboration with Mercedes CEO Ola Kaellenius earlier this year, seeking an investment from the latter in exchange for loss-making Nio sharing its research and development capabilities with Mercedes, said the sources. The talks did not reach a stage where details on the technology to be transferred and the potential financial investment were discussed, they...