im thinking of a kamm back also, but the car is already sloping down with the correct shape. It sort of has a spoiler near the back...
it would be really interesting to do a tuft test with the wipers on and off. maybe this summer when I have more time.
As for mileage I can stay above 35mpg now pretty easily, as I don't go into the city a lot. I will update the numbers in my sig as I go along.
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2004 Hyundai Elantra GT Hatchback bought 3/9/10
3/10/10--27.5 MPG on a 19 mile ride r/t through the burbs
3/14/10--32MPG hwy, 30mi test after new spark plugs
3/22/10--35MPG hwy after new Michelin Primacy MXV4 tires
3/28/10--38MPG, 80mi test most hwy using hypermiling
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