Valiant with tail fins???

To me that first car just looks uninspiring.
White paint on a car is primer in my book. Unless you actually like riding around in something that looks a refrigerator with wheels.
Painted bumpers shout out 'CHEAP' and '80s for me and are an instant downer.

As for the fins, imo they should match or complement the lines of a car.
Can't ever see that happening on a boxy late 60's or '70 car.