You mean this, or something else; https://www.motorbiscuit.com/ev-battery-last-3-million-miles...
A theoretical battery that is not actively produced, let alone actually gone the distance…?
On the other side I can tell you at least SaaB has had a million mile ICE car, from 1989. There’s assuredly more than this.
> 1989 Saab 900 SPG - 1 Million Miles
https://www.saabplanet.com/1989-saab-900-spg-with-1-million-...