Self-driving cars exist today that are safer than human-driven cars in most driving conditions. Over the next 3–5 years they‘ll get even safer, and will begin to go mainstream.
The World Health Organization estimates that 1.25 million people die from car-related injuries per year. Half of the deaths are pedestrians, bicyclists, and motorcyclists hit by cars. Cars are the leading cause of death for people ages 15–29 years old.
Just as cars reshaped the world in the 20th century, so will self-driving cars in the 21st century. In most cities, between 20–30% of usable space is taken up by parking spaces, and most cars are parked about 95% of the time. Self-driving cars will be in almost continuous use (most likely hailed from a smartphone app), thereby dramatically reducing the need for parking. Cars will communicate with one another to avoid accidents and traffic jams, and riders will be able to spend commuting time on other activities like work, education, and socializing.