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Granted, intermodal shipping containers must be given sizes and shapes to mate with shipment hardware on trucks, trains, and ships.
Still, a simple removable lightweight fairing would be easy to attach and remove, such as clip-on nose cones and/or boat tails. Inflatables are an option, with easy shapes like those kid's pool toys that look like killer whales or sharks.
As for group-think, keep in mind that most schooling and professional credentials are essentially conformity badges, i.e., one gets to be an automotive engineer by proving in years of school that one can do it the way it's always been done, with not necessarily much thought to how it might better be done.
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