I seem to remember a thread like that. But weren't they saying something like it got
improved fuel economy with the covered junk up top? I didn't put much stock in what they were saying.
Lowering the rack is a good first step. If you HAVE to carry stuff on the roof (do you? What about a rear hitch style box?) take the same steps as designing anything else for good aero:
- minimize frontal area
- round the leading edge
- enclose with a shape that approximates a tear drop
- taper in plan and profile at the rear if possible
Sorta like this:
