It was only a matter of time! Is Tesla Business model devolving to DeLorean?  Back to the Future? “Higher volume and manufacturing design improvements are crucial for Tesla to achieve the economies of scale required to manufacture” the base $35,000 Model 3 “and still be a viable company,” he said. “There isn’t any other way.” He cautioned: “The road ahead is very difficult.” Mr. Musk added that unaudited results for the final three months of last year indicate Tesl