Moving things underground tends to be prohibitively expensive.
When self-driving cars are common, there won't be a need for street-side parking, which will give more walking area in urban centers. And the lidar navigational system will be far safer for pedestrians, so it won't be a safety issue to mingle cars with people.
When self-driving cars are common, there won't be a need for street-side parking, which will give more walking area in urban centers. And the lidar navigational system will be far safer for pedestrians, so it won't be a safety issue to mingle cars with people.