The deployment and impacts of autonomous vehicles, the sharing economy, and e-commerce are going to impact different parts of metro areas differently. How street space is planned in the suburbs will be much different than in denser, mixed use urban areas or nodes. For the walkable or bikeable places of our cities – which are increasingly in demand – it is not clear how to make a workable mix of autonomous vehicles and walking/biking human beings. One solution is to completely segregate the modes since any human can stop a vehicle simply by being present in front of it. Another approach is to criminalize that behavior (vehicles will have cameras and spatial location and knowledge of traffic light status, after all, making it easy to take a picture and send an automated ticket), and another option is to simply eliminate the car from urban spaces and prioritize walking, biking, and transit since they are the most efficient ways of getting about (and healthy, less polluting, and happy-making). This article from the Guardian nicely frames these issues. Which alternate future do you want?