Waymo is in advanced talks to develop autonomous cars with Renault, Nissan Motor and Mitsubishi Motors, according to Bloomberg's sources, in a move that would join a leading self driving force with the world's largest automotive alliance.

A deal between the three carmakers and Alphabet's self-driving unit could include making driverless taxis, said one of the sources. An agreement could be reached as soon as spring the Nikkei  had reported earlier.

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Bloomberg noted Waymo has previously announced deals with Fiat Chrysler Automobiles and Tata Motors' Jaguar Land Rover. A tie-up with the French-Japanese alliance would be its biggest yet, adding partners who together churn out millions of cars a year – on par with the biggest individual carmakers, Volkswagen and Toyota.

Alliance spokesman Nicholas Twork told Bloomberg the report was based on rumours and speculation while Waymo declined to comment.

Waymo met with more than 12 carmakers in 2016 seeking manufacturing partners for its autonomous vehicle technology, according to documents revealed last month, Bloomberg noted.