while cars do count as being indoors (I think) and can provide some protection from the elements, a heater or air conditioner would be really nice. obviously it would require battery power
There’s already one in game. https://cdda-trunk.chezzo.com/mountable_heater https://cdda-trunk.chezzo.com/large_space_heater It’s for the heater. https://cdda-trunk.chezzo.com/mountable_cooler It’s for the cooler. Happy Hunting.
I think he means they should be preinstalled in vehicles, since most come with A/C these days.