Tesla may have an answer to the Lucid Gravity later next year when it is rumored to release a special 7-seat version of the Model Y Juniper.https://www.notebookcheck.net/Model-Y-Juniper-release-date-set-for-March-with-larger-7-seater-Tesla-in-tow.881515.0.html
The source link is dead. What exactly makes us think that the Y will be 800v?