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Originally Posted by JamieGeek
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NASA did a lot of the early work in this area. Makes for interesting reading.
It's been applied to motorhomes, although I've seen little hard data on just how effective it's been.
Compared to tractor trailers that are squared off at rear to accommodate doors, a motorhome without rear doors can be optimized on a permanent basis. And it's not really that new a concept in that buses from before I was born had rounded rears that reduced drag.