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Non-exploding solid state batteries can't come soon enough. Hopefully we won't end-up "compromising" on "hybrid" solid state batteries (which Samsung is currently targeting for manufacturing in the near future) along the way. We need 100% solid state batteries for EVs.

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It is very, very hard to ensure the safety of the energy density required by consumers of any transportation method except perhaps diesel fuel (which is damn near impossible to accidentally ignite outside of the engine). Improvements will continue to be made, but we might never eliminate the problem.

This might simply be the Paul Walker scenario: too much power with an inexperienced driver.

LiFePO4 batteries are significantly safer for a penalty of 14% less energy density

Modern fuel tanks have to be protected.

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