Autonomous cars are edging ever closer to becoming a reality but just what goes into the technology behind a car that requires no driver.

So what exactly is a self-driving car? In simple terms, it is a car that does not need driver interaction but rather relies on a collection of cameras and sensors.

More than just a car

Some cars require driver assistance while others can operate entirely on its own. There are different levels to autonomous cars, ranging from "one to five", each with its own level of operation.

READ: Driverless revolution: 5 'levels' of autonomous cars

While the research and full implementation of self-driving technology is still ongoing, manufacturers are seamlessly integrating it into their current and future models.