Ducktails

[trebuchet03]

Originally Posted by carousel

Ducktails only cause drag for the most part. Unless you plan to go speeding/racing, this is not necessary.

Are you going to backup your claim?

[orange4boy]

I like the idea of the trip edge as my Previa has a curved rear end on three sides. I would love to find a stick on trim like a door bumper strip to run along the trailing edge. Anyone seen something like this?

[MetroMPG]

Originally Posted by tasdrouille

as for a hatchback, the volvo c30 with the downward pointing ducktail comes to mind.

If you look at, for example, Volvo's own C30 "Efficiency" model, among several aero enhancements, they reduced the rear "ducktail" angle from the regular model, essentially turning it into a roofline extension (extending the downward slope in the roof):



(source)

vs. original model with higher drag:

[tasdrouille]

The Abarth Fiat 600 had a top speed 12 mph higher with the engine cover open.