[aerohead]

*In elevation,Ford has done the K-form body,respecting boundary layer requirements for attached flow.
*In plan-view,they're borrowing from Paul Jaray's 1921 'Kombination-form' greenhouse.
*Both are truncated at a 'practical' length.
*You do have nice clean laminar flow up to where Ford exercised some aesthetics with the truncation.A trip down a dusty road would reveal your actual separation line.
*The wake is exactly as one would expect it should be.
*For lower drag you'd just elongate the body,picking up where Ford left off,extrapolating the curvatures along imaginary 'ideal' pathways.
*The effective-fineness ratio determines,more than any other factor,your potential for low drag.