Who's idea for the 68' Hemi Dart

When you consider the basic formula (small car/big engine) & the fact the factory didn't have near the computer technology they do today & the cars were basically stock bodied, mid-low 10s was impressive by any standard. Hell, the factories are just getting near that NOW after almost 50years of R&D. Sure the factory racecars (CJs, COPOs DragPaks) are quicker when built but in a car-vs.-car comparison I think only the Hellcat & Super Snake come close-and they're forced-induction!