I wish it was standard practice for cities to move away from the highways connecting them to other regions. Have a loop circling the city. Then have park and rent or ride areas for people visiting. Or go the other way and take the ~20% real estate tax of increasing parking lot and road widths. I don’t see either as viable.

Another idea would be to build out bullet trains and infrastructure. Make a societal decision to reconnect all rural areas so living there and working in any of a number of cities is readily accessible.