The world’s first recorded police force was established in ancient Egypt around 3000 BCE.
Back then, Egypt was split into 42 jurisdictions, and the pharaoh would appoint an official for each one whose job was to ensure justice and security. Each official had a chief of police he worked with whose title was sab heri seker, or, when translated to English, “chief of the hitters." Sounds like police work hasn't changed much over the years!
If we used hovercraft instead of wheeled vehicles, we would not have to waste tens of billions every year building and maintaining roads; we would just need a few guardrails here and there to protect landscaping. And no need for spreading salt and brine to melt road ice because the hovercraft would basically treat all surfaces the same, whether lawn or snow or water it would make little difference.
Also, damage from accidents would be negligible, so insurance rates would be minimal.
Not to mention that squashed critters due to tires running over them would be a thing of the past.
So it seems like the Aztecs were ahead of their time.