it's not just weight, it's aerodynamics. you'll see styling cues inspired by the classic models, but the actual body designs are all about fuel economy. those old-school fins aren't coming back because they have a horrendous impact on any car's drag coefficient; same thing applies to the aggressive looking flat grille or headlamps. CAD and wind tunnels (for those who still even use physical wind tunnels rather than digital models) will continue to reshape cars into soap bars because every tiny little improvement in aerodynamic performance that yields maybe a 0.1MPG improvement in fuel efficiency will go farther to sell an automobile today than exactly replicating the look of what was a popular car forty or fifty years ago.
