I think you’ll find that common cars have, yes. And second hand prices have really tumbled. I’m not talking about Aston Martins or Ferraris, where models differ wildly over seven years.
Prius has gone from c. $36,000 to $40,500
https://www.drive.com.au/car-review/2012-toyota-prius-update-on-sale-in-australia-75492.htmlhttps://scifleettoyota.dealer.toyota.com.au/new-vehicles/prius/_/_/?utm_source=google&utm_medium=cpc&utm_campaign=dealer_sem%7Cvehicles&utm_term=%2Bnew%20%2Bprius&utm_content=prius%7Cnew_prius&gclsrc=aw.ds&&gclid=Cj0KCQjwn_LrBRD4ARIsAFEQFKssul9Tcp_IvsE_HbqVwt1_EOFbOFuXoSI0d5PukL0SQSrC88AxuoEaAgfNEALw_wcBand the Corolla from $21,990 to $21,240 - not such a big drop, but a much improved spec.
https://www.drive.com.au/new-car-reviews/is-this-the-safest-used-car--65410https://www.carsguide.com.au/toyota/corolla/price/2019@acorn, the electric motor has been around for twice that long, and efficiencies are pretty much optimised already. 96% doesn’t leave much room for improvement. ICEs are getting there too, I cannot see much more thermodynamic improvement after the HCCI.
So it’s down to the batteries. Offering things like grid connectivity is meaningless to 99.9% of the population, and I suspect 99% of the remaining 0.1% don’t care
We need the Li successor, then it may be game on. Until then, no-go is my opinion.
