A new EV platform, if implemented, would be the result of a far-reaching review of Toyota's electric-car strategy undertaken last year.
Its current production architecture, the e-TNGA system, was launched in 2019 and produces electric vehicles on the same assembly line as gasoline cars and hybrids.
The briefing was given by the former chief competitive officer tasked with the EV strategy review, Shigeki Terashi, according to the person.
So far it has fallen short - its initial battery EV, the bZ4X, suffered an early recall and has had only limited sales.
GM sold more than 20,000 electric vehicles during the first quarter while Toyota and its luxury brand Lexus sold about 1,880 battery electrics.