But that the world's largest car manufacturer has to team up with another of the large manufacturers just to get a viable EV competitor on the market doesn't bode well. Right now they really don't have any decent EV on the market, any of them.
Toyota hopes to introduce a solid state battery type at some point in the early 2020s. Check it out here, where you can also see their latest EV concept car for ride sharing: prototype:https://www.engadget.com/2017/07/25/toyota-future-ev-battery...
At that time, Tesla's Model 3 will have been on the market some 3-7 years. Will they be able to catch up? I am not sure - To me it seems like the usual traditional car company in denial thinking it needs to make weird cars for weird EV fans. This is Mazda's much better looking concept: http://www.stuartsgarages.com/web/mazda-electric-car-planned... No vital specs such as range has been provided, though.
Both the Asian, European and American competitors will not only be 3-4 or even 5-6-7 years behind. They will be hundreds of millions of miles behind in terms of autonomy, and thousands of charging stations behind. And so far, they are still stuck with the old structure of dealerships when accessing the markets; dealers that in many of the markets used to make a good chunk of their income on repairs and spare parts, both which is likely to be less important with EVs. And a large part of their manufacturing infrastructure and employees can only be used for combustion engine cars.
For each of them, if they flunk their first serious attempt at launching a competitive EV, you can add another 3 years or whatever the developing to production cycle is for vehicles. Right now, I have seen no-one - not a single one of them - with specs and design for even as much as a concept car that compares to the long range Model 3 now in production.
My bet is that those of the traditional combustion engine manufacturers that flunk their first attempt (and right now they all look as if they try to fail), will suffer huge losses from 2020- 2025 and that some of them may never recover.