It seems that anything and everything to do with Tesla these days is rumor, speculation, and wild-ass guesses, since the company no longer responds to any requests for information and maintains strict radio silence at all times. Nevertheless, interesting tidbits do emerge occasionally, the latest being a report (in Chinese) by cls.cn that suggests Tesla plans to use BYD’s LFP blade batteries in a production car beginning in the second quarter of next year. Before we get to the rampant speculation this rumor has created, let’s look closer at the blade battery from BYD, which we described in detail last...