similar things have been said and are said about the internet.
i believe tht the first few years o ev-booming will not only bring a ride in lipo price but also a revival of the good old zebra batterie on the more heavy cars and get the nau-tube research quite some headwind alongside with fuel cell research.
when ev hit their real broadscope success there will allready be versions fed of fuel cells, superior solar cells and all that goodness will come with fast-chargers or even inductive charging possibilities.
that way the amount of lipo needed per vehicle will drop significantly imo.