Love revisiting old negatives. The future always appears bright and shiny, more than it ever becomes. I'd like it more if the car wasn't there, just a futuristic scene devoid of all people.
Sometimes we have to embrace wabi sabi. In the chaos of the shapes and the angles and their dominance of the picture, the car actually can add a human element to the picture. Of course it would be easy to crop the picture at the top of the car, but I'd be tempted to embrace it.
I have (vague) memories of attending this. I was 11, going on 12, and more than anything else it was extremely hot. I remember seeing someone getting treated by the EMTs for heat stroke. Oh, and I saved (for many years until it finally broke) a styrofoam cup with the world's fair logo on it.