I don’t doubt it can last 20 years, but I doubt any Tesla will last as long as an average Toyota. We know batteries have limited cycles. When an engine takes a shit it’s a few grand. When batteries take a shit, you’ll never even consider replacing them because they’re 5x-10x more expensive than the car is worth. So off to the landfill. Definitely saving the planet or much money buying a higher end model Tesla.
I think it becomes economical sensible for a lowest priced model 3 if you qualify for all the rebates (state and federal), otherwise it’s an early adopter tech toy.