> Special roadways This is a point that always seems to be missing. All of our roads are/were constructed at a specific size with specific engineering requirem

> Special roadways This is a point that always seems to be missing. All of our roads are/were constructed at a specific size with specific engineering requirements and specific materials. If we have a major change in the technology of the cars, it seems to be perfectly reasonable that we could have a new type of road to accommodate that. For example, before interstate highways it probably would have sounded strange to imagine high-speed roads with limited entry and exit. And before that, may have sounded strange to have automated stoplights and traffic signals.