A lot of that's because there's a finite number of ways to shape a car that is aerodynamic, fits people, and has efficient collision behavior.

People like interesting shapes until they find out it's less safe, uncomfortable, more expensive and loud.

I was recently in Japan and was in awe of how cool their minivans look. They have more of a "cab over" design with really aggressive looking front ends.

Because most car companies want vehicles they can sell outside of North America and most other countries have laws.

If you want to innovate you still have to make sure that the vehicle meets minimum standards for things like materials, edge angle, position of bumpers, lighting design (none of this let's use the brake lights as indicators nonsense), and weight restrictions. The cybertruck violates all of them.

There's way better examples of visual innovation than the Tesla Cybertruck though