Tesla EV Ping!.............
Still not the wave of the future...
Now, if they could develop a supercapacitor to use for their electric storage media, they may be onto something. But batteries are, and always have been, a clumsy and rather inefficient means of power storage.
Batteries are basically very stupid, and will discharge their entire energy content in one mighty arcing blast, given the opportunity. Which includes just a whole lot of heat and light.