Toyota is helping to build Mazdas. At least, its aging car batteries are. Cooperation between rivals is nothing new in the car world. Toyota and Subaru have teamed up to build small sports cars and electric vehicles that are, underneath the skin and the logos, essentially the same. GM and Hyundai have signed a memo of understanding to share new vehicles and clean energy tech, while Honda has used GM’s Ultium platform as the basis of its Prologue EV. In Japan, Toyota and Mazda now say they w...
