Setting aside the ethics and children for a bit, I am disturbed by the idea of leaving a car running on a battery for an hour or longer. That is a good way to run down the battery and needing a AAA towing. Alternatively, leaving the engine on would use up gas. Plus, just general wear and tear on the vehicle.

Cars are expensive enough as it is.

The victims of the Aztecs would beg to differ. Lots of people were fed to the sun god, to quench its thirst for blood, all to delay Armageddon. Like any other continent, Native America had genocidal maniacs and the Five Nations that resembled a federation. Good and Evil has no homeland, just the feelings that grow inside of people.