This will not happen anytime
This will not happen anytime soon. When Tesla adopted the 18650 Li-Ion battery in 2009, it was already in mass production and had 25+ years of historical performance data. When QS has a prototype ready, it will have to be validated for many years in an automobile environment before it can be put in a mass produced auto. QS may make a car battery, but it will not be anytime soon. Meanwhile QS can survive on batteries for benign environments like portable electronics, power tools, stationary storage, etc..