There’s something to be said for joint car/pedestrian spaces as a permanent situation. Pike St outside of Pike Place market and Hanover St in the North End of Boston come to mind. Both are nominally streets, and cars attempt to drive them, but the speeds are slow enough, and there are enough pedestrians that both are on relatively equal footing. Cars are cautious of the pedestrians, and pedestrians weave around the cars, everyone has their choice of mode of transport.