I think Phil got it.
A good aero downsloped window (say 10-12 degrees below hoizontal) may hold flow but you just can't see out of them. That was thebig beef with "fastback" cars in the 1960s - people simply couldn't see out of them.
Until we get legal all-round CCTV, we may be at the aerodynamic wall for extreme vehicles.
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2000 Ford F-350 SC 4x2 6 Speed Manual
4" Slam
3.08:1 gears and Gear Vendor Overdrive
Rubber Conveyor Belt Air Dam
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