I was thinking some more...if a live powerline that falls on your car doesn't electrocute the occupant, is that because of a Faraday cage effect specifically, or because of the charge simply being channelled through the car body to the ground, which sounds similar perhaps to a Faraday cage but is not technically the same thing?

I mean, in a true Faraday cage, doesn't the interior of the cage technically have zero charge? And yet we're warned that if we're inside a car that a power line falls on, not to touch anything metal inside the car. That would seem to violate a characteristic of a Faraday cage, wouldn't it?

OK, now I'm thinking too much about this.