The price point is assuming the R&D is already paid off, the factory is built, the supply lines are optimized, and they're building a million of these things every year. History has shown that you can't start off with a cheap mass produced car as your only product because mass production requires way too much startup capital. The success stories started with hand built extremely expensive cars that were used to pay down R&D costs and keep the company afloat while they built the factory for the mass production model.
About the only way I see this happening is if Bezos goes all in and dumps an outrageous amount of money into getting the production line running knowing that he won't see a return for at least a decade or more, and I don't think he's quite that generous. Also this assumes that cheap lightweight powerful batteries become widely available in the next couple of years.
https://insideevs.com/news/757237/slate-ev-spotted-los-angel...
https://insideevs.com/news/757649/slate-auto-truck-suv-revea...