No not every single EV car have to be designed from scratch like Tesla did, see Ford with their File-a hundred and fifty Lightning. A change from ICE to EV is completely viable for existing cars and trucks nowadays. Proton can leverage on that possibility to speculate their R&D monies https://elliottttqmi.worldblogged.com/40227510/new-step-by-step-map-for-cvt-proton