About the only thing you can do is carry a bottle or two of water with you, not leaving it in the car. I have an EDC (Every Day Carry) pack that I carry to and from work. Along with several, "prepper" items, here's room for a couple of water bottles in the pockets of it.
Bottled water actually holds up pretty well when frozen. I routinely use them as ice packs, keeping them in a sub-zero freezer until needed. Trouble is, you have to defrost the thing before you can drink it...
About the only thing you can do is carry a bottle or two of water with you, not leaving it in the car. I have an EDC (Every Day Carry) pack that I carry to and from work. Along with several, "prepper" items, here's room for a couple of water bottles in the pockets of it.
Bottled water actually holds up pretty well when frozen. I routinely use them as ice packs, keeping them in a sub-zero freezer until needed. Trouble is, you have to defrost the thing before you can drink it...