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Old 04-28-2015, 06:10 PM   #23 (permalink)
mwilliamshs
EcoModding Apprentice
 
Join Date: Apr 2015
Location: USA
Posts: 148

VanDelay - '89 Ford Econoline E-150 XL
90 day: 15.93 mpg (US)

Old White Civic - '98 Honda Civic LX, AT
90 day: 33.18 mpg (US)
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Quote:
Originally Posted by oldtamiyaphile View Post
I think the bulged section is actually a trapezoid with straight sides....
Agreed

Quote:
Originally Posted by oldtamiyaphile View Post
...and the curved appearance is just perspective....
Disagree. Cut a flat trapezoid and push its two longer sides toward each other (while keeping them flat against a surface like the front of a trailer) and the shorter sides will curve. That curve is the aerodynamic benefit.
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