RE: A reason to remain cautious cars have nothing to do with the price of lithium in so far as battery economics is concerned.
look around,
compare today with 15 years ago,
cell phones,
cordless drills - i own three
labtops and electronic products,
now think of china, india, south america, africa
they are just beginning to use cordless drills and such.
go to a construction site - what is needed the most - space to charge all the cordless drills.
trades guys used to have one - now they have an impact driver, cordless, mini drill, saws and a drawer full of batteries - they can't survive without them.
cars......that would just be a bonus.