Two issues with the "Bubble Dam" spoiler that I can see.
A: What about flow from the sides of the vehicle into the bubble.
B: Doesn't the truck bed argument apply to this? (Tonneau better than open bed, tailgate up.) If this is the same, I should just build up the edge of my truck bed to get a 12 degree angle from the cab top.
P.S. Wouldn't you be putting a LOT of force on the Plexi panel? Even with .1 psi, that is 100 pounds of force.
__________________
|