@Lyman
I'm afraid if the cell temperatur exceeds a certain level (140 deg Celsius?) nothing will stop the internal reaction with known results.
IMHO it would make more sense to have the cells seperated and well canned. So eight small cells instead of one big. They don't
up at the same time.
To make it even more safe I suggest to put a single cell under the bed of CEO Boeing, CEO securaplane and CEO Yoasa.
thermal runaway
"Lithium-ion cells with cobalt cathodes should never rise above 130°C (265°F). At 150°C (302°F) the cell becomes thermally unstable, a condition that can lead to a thermal runaway in which flaming gases are vented."