No not each individual EV car ought to be developed from scratch like Tesla did, see Ford with their F-150 Lightning. A change from ICE to EV is completely feasible for present vehicles right now. Proton can leverage on that likelihood to invest their R&D monies where it might depend.] https://cvtproton41739.techionblog.com/34200579/not-known-facts-about-cvt-proton