Car

A car is a small supersonic pilotless aircraft. Cars can transport a passenger from the North Pole to the South Pole in less than two hours, which is several times faster than the fastest aircraft of the twenty-first century. Cars can be cheaply and instantly hired from anywhere on the Earth, meaning that every continent is always within reach. In the centuries since cars first became cheap, humanity has culturally adapted to its new relationship with location. It is no longer necessary nor customary to live near one's workplace. When looking for housing, one looks for a suitable place anywhere on the planet. The same is true when searching for work, or romance, or theaters.

Mukta
The first vehicle capable of carlike speeds was named Mukta. It famously circled the planet in 2073 CE.

The Saneer-Weeksbooth bash
For centuries, air traffic control for these millions of pilotless machines has been entrusted to the computing resources of a famous bash, Saneer-Weeksbooth.

Utopia
The Utopian hive travels via Utopian-made cars, in keeping with their other habits of isolation from broader culture. This car network is entirely separate in both infrastructure and control from the mainstream transit network controlled by the Saneer-Weeksbooth bash.