My wife, Kate, loves--really loves--her extended-cab GMC pickup and its V-8 engine, all 5.7 liters of it.

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It had a V-8 engine, arguably one of the first in-car phones, and parachutes, which were deployed to help Batman turn sharp corners.

BBC: Original Batmobile sold for $4.2m at US auction

Smaller and less powerful than Detroit-built pickups, its V-8 engine produces 240 horsepower (the same as a V-6 Honda Accord sedan), while Chevy Silverado owners can get up to 325hp.

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