Yes, don't use these packs in cars. Or any other soft package. We had one of these packs explode in P'land at Big Dad Raceway. It was punctured and burst into flames.
These packs and all soft packaged LiPo products should be banned from cars and any other indoor usage. ROAR is close to calling the name of the game for car LiPo.
This is not knocking Cheap Batts.Com, just the facts.
There is little info on the MSDS of the bi-products of fire in LiPo batts. Digging deeply into the webs shows there are some incredibly nasty , toxic and dangerous materials thrown out by LiPo fire.
IBEW Local 48-retired (Definitely, great pension.)