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I did check out the template, but it seems like it would need to be very wide across (eight or more feet) in order to have standing headroom (six or more feet). It seemed like messing with the aspect ratio severely compromises the Cd? I don't suppose you'd know where I can find a Sketchup or Autocad model of what you just linked so I can scale it to my model and see how it measures out?
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Thee Template is a cruel mistress. It's a half-body of revolution; one simple curve swept around an axis. One member here generated a lot of discussion about what that curve is exactly:
Equation and Spreadsheet for Template.
The half-body only has headroom in the top center. The full body only has floorspace in a strip down the middle. This is why I suggested the ME-262 over the airliner nose. In fact, I've questioned the need for it to be a body of revolution.
From left to right — round, squircular and square. Later I considered lowering the equator and ditched the cartesian coordinate layout the spreadsheet
necessarily imposes with the geodesic geometry. Here's a compounded curved rendition:
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I don't know if you were joking about the propeller; only way it could work is only when the car is parked, and only if..
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At that point I was outright mocking you.
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When you mention interference drag, are you saying that a wide-open pipe on the top of the car would cause amplified drag by interfering with the stream of air coming up from the windshield? I guess that makes sense.
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That makes no sense. An open-ended pipe will self-interfer. Consider seifrob's comment and then put 'vena contracta' into the search box in the upper left. An empty culvert is a long way from an inhabitable space, no?