"Speed Duel, accelerate!"
Although Kira had removed the restriction that Riding Duels had to use "Speed World," he had retained some of their practical pursuit functions.
Just like what had been shown at the very beginning of the 5DS anime—when Fudo Yusei had tried to flee on his D-Wheel, Ushio Tetsu, the Pursuit Team officer chasing him, had activated the Field Spell "Speed World," forcibly dragging Yusei into the high-speed field and making him duel.
If the fleeing party could not win the duel, they could not escape their pursuer. That was the basic principle of Riding Duels. The loser's D-Wheel Perpetual Motion Machine would be forcibly shut down, allowing the pursuer to catch up.
The two of them were pulled into a Riding Duel, and the D-Wheel that had been fleeing ahead had no choice but to slow down. Kira's D-Wheel followed behind, and they entered Duel Mode while maintaining a certain distance between them.
Entering Duel Mode did not merely restrict their speed. The duel displays mounted at the front of their D-Wheels automatically showed both sides' Life Points, the state of their respective fields, and their faces, captured by the front-mounted cameras on their D-Wheels.
This was only natural, and a necessary feature for D-Wheel duels. Unlike traditional standing duels, Speed Duelists could be far apart while playing cards, and their vehicles were generally moving at high speed. The roaring wind was enough to drown out any explanation of card effects or actions.
Thus, communication during a Speed Duel was conducted through communication systems. Both duelists' images were transmitted to the other through the front cameras, while voice signals were exchanged through the communication devices built into their helmets. These were fundamental features every D-Wheel needed. Without them, neither side would be able to hear a word