Probably not relevant for someone living in LA, but I ran a power outlet from the grille of my Insight through the firewall and into the hatch area, where I have a 120v electric heater. 4 hours before I wake up, a timer turns on my 12v charger, block heater, and electric heater to prewarm the cabin. When it's cool out, you might benefit from pre-warming the interior (or if you're clever, possibly even pre-cooling it).
Maybe a solar-powered cabin exhaust fan? The kind that mount in windows don't work very well, a custom job would be best.
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