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Old 08-10-2021, 06:15 PM   #1 (permalink)
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Join Date: Jun 2009
Location: SC Lowcountry
Posts: 1,607

Geo XL1 - '94 Geo Metro
Team Metro
Boat tails and more mods
90 day: 72.22 mpg (US)

Big, Bad & Flat - '01 Dodge Ram 3500 SLT
Team Cummins
90 day: 21.13 mpg (US)
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Droptail truck tailgate.


I donít think weíve done this one yet.


Droptail aerodynamic benefits MPG (


Computer automatically deploys tailgate into a spoiler position at highway drag inducing speeds, for best aerodynamics improving mileage, and then closes it as vehicle comes to a stop. The system may also improve trap speed and ET in the 1/4 mile. Stability can be improved in the spoiler mode through a downward force applied to the rear axle on slippery roads at speed.





Woke means you're a loser....everything woke turns to ****.

Donald J Trump 8/21/21


Iím not a climatologist, aerodynamicist, virologist, physicist, astrodynamicist or marine biologist..


I play one on the internet.

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