Mercedes-Benz beat Toyota to announce the first production car from a global automaker with a true solid-state battery. The sedan is part of its EQS series and is capable of covering more than 600 miles of range on a charge in its first edition.https://www.notebookcheck.net/First-solid-state-battery-Mercedes-EQS-offers-620-mile-range-and-F1-technologies.967616.0.html
If true, that's very good news, and that tech will end up trickling down towards cheaper cars.