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aerohead · 10-07-2010, 07:38 PM

GM got a patent on a 1/2-tonneau cover which had lower drag than a full tonneau.
The back half is covered.The front half is open.
So aerodynamically,the retractable feature would need to be reversed.

10-07-2010, 07:38 PM	#5 (permalink)
aerohead Master EcoModder Join Date: Jan 2008 Location: Sanger,Texas,U.S.A. Posts: 16,312 Thanks: 24,439 Thanked 7,386 Times in 4,783 Posts	Gm r&d GM got a patent on a 1/2-tonneau cover which had lower drag than a full tonneau. The back half is covered.The front half is open. So aerodynamically,the retractable feature would need to be reversed.