Toyota is working with Japanese oil producer Idemitsu Kosan to develop solid-state batteries. Upon announcing the partnership, the automaker laid out its roadmap for development, and although it expects to have the ability to commercialize the technology by 2027 or 2028, production will initially be limited to tens of thousands of vehicles.

2027か2028に商用化されるとしても、当初の生産台数は数万台に限定されるだろう。

つうことは、普及するまでには更に何年もかかりそうだ。