[Christ]

Originally Posted by jamesqf

But Cd is not the overall drag, it's purely a function of shape. A toy model of your van will still have the same Cd. To get total drag, you multiply the Cd by the cross-section area.

SO, while I mistyped exactly what I was trying to say, you clearly understood it enough to argue with it.. essentially making less sense.

I'm well aware that Cd is not overall drag, and I'm also aware that CdA is the overall drag figure.

What you've stated here that is not entirely true is that a toy model of a vehicle will have the came Cd as the full-sized vehicle. It will not, even when built to scale, as a direct result of manufacturing inefficiencies.

But I digress, we're taking this off topic.