Hybrids are still less attractive then all electric for automobiles, if the charging time and battery cost/life issues can be overcome.
I’ve found nothing regarding possible cost for the EEStor capacitor system.
Regarding charging the EEStor capacitor system, from my fast net search, I’ve seen about 3kv as an operating voltage. 3160V is a very common standard industrial voltage. So if a charging station is tied to existing tranmission lines, then xforms the power to 3160V, the hardward (xformers, disconnect switches, cables, plugs, etc.) are all off the shelf comercial items.
As I would envision use of my “EEStor Corolla”, I’d plug in 208V/110V at home/work, etc to charge using the onboard xformer to boost volatge to the storage level. This would take hours to charge (overnight normally).
But, when driving cross country, would pull into a charging station, plug in a heavy cable to the cars fast charge fitting, and swipe my credit card. About 5-10 minutes later (and it take that long to get kids in/out of bathroom, lol) the EEStor capacitor would be fully charged for the next 3 hour leg.
I could live with that…