Chrysler puts those modules in a metal case... just like every other auto manufacturer. They also provide planned venting. They know what they're doing.
In vehicles designed as EVs or substantially modified in design to be an EV the battery pack is always under the floor, not inside. Some of that is just to make assembly practical, and it is common in hybrids to place the high voltage battery pack in the interior.
The fire issue typically occurs in amateur installations due to very poor charge management, but in production EVs it is more commonly due to physical damage in a collision... so yes, a good enclosure makes sense to me.
In vehicles designed as EVs or substantially modified in design to be an EV the battery pack is always under the floor, not inside. Some of that is just to make assembly practical, and it is common in hybrids to place the high voltage battery pack in the interior.
The fire issue typically occurs in amateur installations due to very poor charge management, but in production EVs it is more commonly due to physical damage in a collision... so yes, a good enclosure makes sense to me.