Study: Optimal Design of an Ecofriendly Pickup Truck Overhang and Roof to Reduce the Drag Coefficient

[vteco]

Just found this interesting read:

http://www.mdpi.com/2076-3417/14/11/4667

downloading the pdf shows the illustrations better.

[vteco]

Just read it through, and I believe I'll try modding the top of the Silverado to incorporate the lead-in and out angles mentioned and put the max thickness at about a third of the roof chord.