[aerohead]

'finally got to test the 'Template' at DARKO,September 15,2017, 9-years after the latest 'Template'-C thread was published.
As a full-tail she came in at Cd 0.1209.
At Kamm's recommended 50% frontal area truncation,she measured Cd 0.1487.
With a 2% race-inspired cooling system she'd grow to Cd 0.1233.
As a mirror-less 'camera' car she'd remain at Cd 0.1233
A single,legal,SCCA-type race mirror would bump it to Cd 0.1283.
The 1/3-scale model has arbitrarily-wide fairings,to accommodate strap fastening to a ground-board.I suspect that the drag could be trimmed when at 1:1 scale.
IVECO has an 18-wheel, tractor, 'Glider', with a zero-porosity cooling system,
Such technology would allow for a zero-drag cooling system.
Also,with such little horsepower required to propel the 'Template' at highway velocity,there'd be little heat flux to deal with in the first place.
The model required 26-horsepower to overcome air resistance at an indicated 200-mph according to measurements.
NOTE:
During smoke flow imaging we could not exceed 30-mph air velocity in the test section,placing the body in a sub-critical Reynolds number flow regime.Streamline filaments diverged as expected,with smoke traces widening.A wake survey conducted with smoke revealed strong surface shear all around the transom,indicating fully-attached aft-body flow even at low Reynolds number.