It might not count as innovation in the last four years because the groundwork was laid decades ago, but in the last four years Waymo evolved to the point where it can drive on the highways.
All it will lead to is yet more people that are out of a job. Right now at least a driving license (more so if it is a commercial license) is a source of income to many.
And then what? Once the economy no longer depends on human input (labor), why do we expect it to keep producing outputs that humans need (food, shelter, medical care)?
Roughly 36k people died on US roads last year. Waymo's own numbers over 271M driverless miles show about 95% fewer serious injury crashes than the human benchmark in the cities it runs in. Discount that however much you want for methodology, it's still progress.
