So lets cover it in only asphalt that absorbs that heat and continuously vomits it back up over the course of the entire night. All this shit is self defeating, and a major cause of the situation we find ourselves in. Car infrastructure also encourages longer distances between destinations. Roads eat up more space than alternatives, and cars themselves are large vehicles. This, along with the increasing speeds of cars encourages society to spread out. Without it our cities would be more human-centric.