The car industry is first-class when bending sheet metal into a car, how low can be the price of all that bent sheet metal? Dacia Sandero ..... £7995.
An electric car is a package of a very expensive battery pack and less than £7995 worth of sheet metal.
Moore's Law applies when something doubles in performance for the same money, or, same performance for half the money.
Since when did Moore's law apply to battery technology? As far as I know, the law applied to computer processing power, and now it is starting to break down anyway. Battery tech is coming on in leaps and bounds now that there is a massive potential (no pun intended) market for it.
Moore's Law came from Gordon Moore of Intel, and you are correct, it applied to semiconductors in the earliest instance.
Moore's law for semiconductors may well be breaking down, but it has held true for 50 to 60 years of semiconductor manufacture, 50-60 years being 25 to 30 iterations of a 2-year Moore cycle, not a bad record for an empirical concept.
Moore's Law is such a useful concept, it has expanded beyond the semiconductor industry.
The battery manufacturers have described battery capacity developments as having a 7 year Moore cycle