Cyclist belong on their bicycle lanes , and those lanes belong besides every road.

Pedestrians belong on walkways, along every road

What is about stray pets and railroads? Horses , dogs, cats?

If we are talking about something so unrealistic and futuristic like autonomous vehicles lvl 5+. We may as well assume that we fixed everything else at that point of time.

Or, we just can take this as what it is. A sarcastic joke