DON'T... REPEAT, DO NOT use that candle as is, I've broken more than one glass jar using them as a container for a re-cast candle... apparently, there's not too many jars out there that are tempered to handle the heat from a burning wick on the inside. I can't stand the idea of throwing away candle stubs, so I use wide mouth jars, but I always put them on a large plate to catch wayward wax if/when the jar cracks/breaks, and I keep the plate/jar clear of combustables, but there's no way I'd use one in a vehicle. Stick with a candle in a can, there are several "survival" candles that fill the bill on the market, or if you're of a mind to, you can make your own. I've found that an "International Blends" gourmet coffee can works great, they even have a reusable plastic lid to hold matches or a BIC with the candle.

Troy