...Just for drill, I'd say the more you look at aircraft, or even NASA (lol), if the technology gets put into cars...all the better....
As for safety....it's the manufacturing, machining and fabricating where you gotta be careful with magnesium...it is a different animal...By the time it gets to the cars, though, no worries...
As far as fires in cars and health and safety, there's bigger fish to fry with plastics, composites, and batteries than with aluminum and magnesium...lol...
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