text: Whether it's improving air quality, saving people money, or lowering stress, becoming car-free has many advantages. As less people use cars, more good effects will begin to show.    Driverless cars may seem like a thing of the future, but they are much closer than most people seem to believe. Many different companies such as Google, Tesla, Audi, and many more have already built and tested their own models. However, many people are wondering whether self-driving cars are a help or a danger to society. Driverless cars are the next step in automotive technology and the research on them should continue because they will be safer and more efficient than cars driven by human drivers.