I would start a community space with a dance hall, coffee shop, bike shop, maker space, brewery, and library centered on an urban trail to show people you can go places and do worthwhile things without an automobile. I’d include parking for cargo bikes, trikes and hand bikes, along with upright bikes and chargers for electric bikes. My hope being that the model would spread to other cities and higher density residential developments would spring up around it. Obviously my UBI wouldn’t cover that no matter how generous it was, so step one would be to use my extra time to get buy in from like minded neighbors.