So you drive a 2011 Sonata ... wow. I
love the design of that car. When I first saw one I thought it was a Mercedes.
Hyundai really has stepped forward in the design department.
My neighbor has one, and I stop to look at it often.
Stock, your car has an impressive .28 drag coefficient, but with a few tweaks, it can match the .25 Cd that the first generation Insight had.
Stock, your car has a very small grille, I would be cautious about plugging very much of it. The car is designed very well.
The hybrid version has a drag coefficient of .25, yet doesn't look much different from the car you have now. The grille
appears to be a massive gaping maw of a hole in the front end of the car, but no doubt it is plugged from behind the slats. ( The bumper is also cleverly disguised within the 'mouth' of the grille, and actually blocks most of the grille area. )
It might be a good idea to see what changes were made to the car to drop the Cd down to .25
http://www.thedetroitbureau.com/2010...sonata-hybrid/