No not each and every EV car or truck have to be developed from scratch like Tesla did, see Ford with their File-150 Lightning. A change from ICE to EV is solely practical for existing cars and trucks today. Proton can leverage on that possibility to invest their R&D monies https://cvt-proton20740.liberty-blog.com/34297851/new-step-by-step-map-for-cvt-proton