> Stopping distances aren't about to magically improve in the next decade such that any vehicle can speed down the street at 200mph (or anywhere close to that)

> Stopping distances aren't about to magically improve in the next decade such that any vehicle can speed down the street at 200mph (or anywhere close to that) safely. What makes you think the vehicles wouldn't be coupled together mechanically? Pedestrians wouldn't be on a road going 200mph; I'd expect that kind of road would be fenced off like rail is today, or in a tunnel, and perhaps even be on tracks. The point is that automation will change the nature of transport in ways that don't fit into the current mass transit / individual vehicle binary that we have today. That binary is based on limitations on current technology.