I'm going on a southwest roadtrip this summer. I'll carry a portable camping butane stove along and I was wondering if I could encouter any danger if I leave butane cans in the car while in hot Southern States? Should I put them in the cooler? Maybe it sounds stupid but I don't want it to blow in my face while I'm driving or sleeping! I carried some before but only in New England and Canada, not exactly as warm as in the SW I guess...

Thanks and have a nice day!