So I've been using the tool to look at my motorhome and it's (lack of) aerodynamics.
Thinking my next step is to do some coastdowns. Thought I'd try using a GPS app for my phone to gather some data. Being the lazy kind of guy, I decided maybe someone else had already done this. Google to the rescue...
Crr Cda solver for bicyclists
So yes, it has been done.
Next up. Car version. Gotta see what kind of files come out of my GPS app...