It's a new technology, and cost will depend on wide adoption, mass production, and competition.
At first I expect it will be cost-prohibitive for all but the high-end. But it will plummet if it works and is adopted.
Consider: In the mid 1990's, flash memory was typically $200 for 1MB, and only crazy rich people used it. Today it's around $20 for 16GB, and everybody has a couple "thumb drives" laying around.
That's a cost reduction of more than 150,000:1 in only 15 years! Heck, even 10 years ago, no one in their right mind would have predicted that Flash would become so inexpensive. It's all about competition and mass production, once something is widely adopted.
The "early adopters" always pay a high premium.
That is all a reasonable analysis but those are not the only factors involved in its basic price once they have played their part. Materials and production costs will have some lower limits and will affect how widely it is adopted as well.
Pretty plain Jane vanilla , but for the money suits my needs just fine.
When we're discussing a 40-60K expense after a price decrease, the comparison to a $200 first generation flash drive don't necessarily add up to making this a viable purchase.
I have not seen any in depth analysis as to whether or not our electrical grid in this country can truly sustain a massive fleet of civilian electric vehicles. Seems to me we need to address that first before progress in this arena can be made.
As I see it now, there's no "durable value" in promoting electric vehicles to civilian consumers outside of novelty.
Maybe after the larger issue of energy is thoroughly addressed.