Existing freeways are not designed for one hundred twenty mile per hour movement in comfort, nor can they benefit from autonomous vehicles' superior lane merging, lightness, and the ability for newer vehicles to have zero harmful emissions. Such clean, autonomous vehicles need fewer lanes, less structural expensive steel, and benefit more from extra grade separations. But where are the maps for where new, fast, easy-to-scale autonomous freeways could go? What legal property agreements could begin to be made in advance? I am developing autonomous freeway maps and models so cities can hard tradeoffs and slow expansions in the future.