BYD executive Stella Li claims the company will have a solid-state battery model next year, the earliest date any automaker has cited, though no model, sales plan, or confirmation was given. Toyota targets 2027-2028, Honda and Mercedes around 2030, and LG Energy Solution estimates roughly a decade away for cars. Mercedes and VW's PowerCo are partnered with US-based Factorial Energy, while Taiwan's ProLogium is building a plant in Dunkirk, France. CarNewsChina speculates, via unconfirmed sources, that BYD's car will be a Yangwang flagship rivaling Rolls-Royce. Hyundai's research chief doubts the raw material cost problem will be solved within five years.