So they're going to double their battery's range in 3 years time ? Uhuh.
I'll believe that tech when I see it. Panasonic, BYD and LG Chem have spent literally decades incrementally improving batteries, and spending many billions on it over the years.
So unless this is a battery tech they're bringing in from one of the battery powerhouses then I'm hugely skeptical that Toyota can suddenly magic up a breakthrough when they've had their battery tech outsourced to date.
Toyota were once a leader and are now seriously behind the curve. I can't imagine a company who is still hedging their bets with hydrogen can get back in the lead. At absolute best they can manage to survive while sliding down the sales charts every year