The battery quality control had better be extraordinary.
Far more batteries than a Tesla means more fire risk.
Compartmentalization of the batteries might help.
LOL, they would have to treat the battery compartments like Magazines with ordinance on warships!
“FLOOD THE MAGAZINES-ER, BATTERY COMPARTMENTS!”
Of course, with batteries, that only makes it worse, and think of all those rare earth elements being pumped over the side into the ocean!