Late at night.
A white sedan sped along the elevated highway through the darkness, its engine accompanied by a pleasant hum. It was the sound of a Perpetual Motion Machine running.
In this dimension, most energy sources besides the Perpetual Motion Machine had already been phased out. Cars had long since stopped using fuel or electricity for power. After the successful miniaturization of Perpetual Motion Machines, not only D-Wheels but other vehicles had gradually begun replacing their old energy systems with them.
Another great convenience for household vehicles was that driving skill was no longer a prerequisite for buying a car. With the Automatic Driving System fully matured, manual driving had practically become a specialized skill reserved for a small minority. Aside from those who needed it professionally or had an interest in driving, manually driven cars were rarely seen on the streets.
At that moment, Kira sat in the officer's official vehicle, flipping through a batch of cards he had acquired earlier that day.
Naturally, the Security Maintenance Bureau officer's car was high-end equipment, fitted with KaibaCorp's latest driving AI. Its experience and reaction speed surpassed those of human drivers.
Kira had considerable faith in that advertising slogan. Even in another world, it was still made by KaibaCorp. The KaibaCorp he knew had already developed sufficiently mature intelligent driving systems who knew how many years ago. By this era, its technological capabilities went without saying.
Partway through the journey, headlights suddenly approached from behind.
A D-Wheel's hum, accompanied by the pleasant sound of a Perpetual Motion Machine, streaked past the side of the car.
Ordinary overtaking would have been one thing, but after passing from the side, the D-Wheel arrogantly veered, sliding forward sideways for a stretch and scraping a shower of glaring sparks across the elevated roadway.
Then