Car plateforms are already the same between a lot of brands. https://en.m.wikipedia.org/wiki/List_of_Stellantis_platforms https://en.m.wikipedia.org/wiki/List

Car plateforms are already the same between a lot of brands. https://en.m.wikipedia.org/wiki/List_of_Stellantis_platforms https://en.m.wikipedia.org/wiki/List_of_Stellantis_platforms Renault tried to have a standard swappable battery but gave up due to too little industry following.