So... car wouldn't start, but I have a solution.
It involves a 12v 370w electric engine block heater that will heat everything to 60 degrees, a 12v solar panel that generates power even in overcast skies, a charge controller, and some fancy rewiring.
When I'm done I'll have an engine block heater with a battery backup and a solar charger to keep the block heater from fully draining the battery.
Basically, I will be able to start my car in any cold and never have to worry about a dead battery again.
It'll be great. Even in the event of a zombie apocalypse or a nuclear winter I will still be able to start my car.