Opinion with no fact….. Do I think a company like Tesla invested Millions on equipment, assembly lines, materials, and promotion having never proved the science or capability of the new battery. Hell no. In my opinion there is no chance they went this far without making prototype samples and tests to ensure a profitable and improved product. Would a revolutionary discovery or improvement be advisable with 1 year of sales and commitments? Hell no that would be a catastrophe pushing every sale off the cliff. Let alone thousands of used Teslas flooding the market. Again just an opinion but I suspect there is more to this then they made a mistake or they can’t make enough. With Billions at stake trying a “I think this might work” is Not a play a company of this scale would make.