text: Even if driverless cars are mass-produced, they will still have to move alongside many people with normal cars. This could cause a variety of problems and setbacks, as human drivers may not provide the regular pattern that the driverless cars and the roads create. Human spontaneousness may interfere with the driverless cars and their sensors designed to alert the occupant of danger. This may cause a driverless car to swerve or react to some small movement of a car driven by a human, while if a human were driving, they would not have reacted, seeing as well as doing this regularly, they understand that there is no risk or danger to them.