Human: With regards to autonomous cars, why do you think they will be so popular? Assistant: 
Well, they are safer, more convenient, and more environmentally friendly. They are also cheaper. Autonomous cars are great because they are able to drive themselves, and can do so safely without having to worry about getting into an accident. They are also better for the environment because they are not driven by people, and they are able to drive in traffic jams and avoid accidents. Autonomous cars are also a lot cheaper than human drivers, and that makes them more affordable for everyone.