Who's idea for the 68' Hemi Dart

I feel that during the muscle car time period, there was obviously a war between the big 3 (MOPAR/FORD/GM). The 1968 Hemi Dodge Dart was obviously Chrysler's atomic bomb that was dropped. My question is how did this go down? Who went to the CEO's with the idea on the war room drawing board? Who ok'd it, and how did it go down? Your thoughts?:coffee2: