Electric vehicle manufacturer Rivian Automotive and the Volkswagen Group are partnering up in a nearly $6 billion deal to create a new technology company.

Last June, VW said it would invest $5 billion in Rivian as part of a new joint venture that’s focused on developing a new electrical architecture and vehicle software for future models, including subcompact cars, with the first planned for 2027. The investment size has now increased to $5.8 billion.