It would be really neat for some company to produce kits to replace ICE's with electric motors and battery packs for modern-ish cars like a Corolla/Civic/Fiesta. No need for fancy LCD screens, auto-driving, etc. just replace ICE with EV parts and get 100+mi range and you'd replace most commuter/2nd car use cases.

I envision it to be like PC parts. It would be awesome for standards to develop for EV's like there are for ICE. I'm sure its much more complicated and deals with high voltage so likely to need some education to not fry yourself.