When I go for a bike ride with my SO we always ride side by side on streets that have a posted limit at or below 40kmh.
We usually only ride side by side on residential streets. Occasionally we get someone driving too close to us when passing or shouting out their windows saying single file in the same way.
Its like going for a walk, we would not walk in a single file, neither would we sit in a car in single file.
What if you take the red pill and its just another simulation?
I would recommended people watch Pantheon on AMC. Two great seasons and it dives into some interesting “are we living in a simulation questions”.