Utilize the input text as a context reference, choose the right relationship between Volvo and truck from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

And as Kai noted earlier, Daimler and Volvo have their own JV, just wondering if there's a concern that on this commercial truck hydrogen market, the OEMs might go in-house on some of the components related to hydrogen.

Answer: product_or_material_produced