Battery Fire

That would fall under this category:

 

NTSB is a good way of knowing what's burning / causing vehicle fires. Also websites like this provide a wealth of vehicle history. And the history of consumer use of NiMH batteries dating back to 1989 gives us a very clear sense of how minor fire risk is with this battery type compared to others.

More importantly:

In an era when unchecked use of fossil fuels has increased global average wind speed by 17% in the past ten years and more than several examples of those winds burning 100K acres in a single day in in Oregon and California in 2020 (mega-fire) and at least one example each year of a million acres burned in a fire in California (Giga-Fire) the whole planet is poised to set all the Prius on fire because too many humans are fossil fools who are burning down the only home they have.

 

This is why you must sweep the false floor of your Prius hatchback to manage and maintain. Otherwise you get battery fires.

 

It's true if we just raked the forest floor we wouldn't have any fires...