You'll get a decent amount of downvotes because we're still not sure if Aptera is a scam or not, but the design is where we should be going.
If we moved away from full-ton SUVs, and focused on small cars, we could add far more lanes and clear up traffic. Our roads aren't going to get any larger. There's no more room in cities. We need the government to incentivize small commuter cars that take less space and energy. 90% of people in those SUVs are driving solo and it makes no damn sense.
Physically smaller cars will not make a meaningful dent in traffic, as they still need following distance, still mostly only carry 1 person, and can only shrink so much before you run into limits of human anatomy. They barely even save parking space. They could reverse some of the worst excesses of traffic deaths maybe because you can actually see over the hood and such though.
Public transit, concepts like 15 minute cities, and more biking/micromobility/walking friendly infrastructure are what will actually work. If government won't do it then they've got to go.