I started a very new job working with Autonomous Vehicles but don't know much about them.
self-driving car, robotic car) and unmanned ground vehicle is a vehicle that is capable of sensing its environment 
How does it actually work? Does a robot drive it?
Robotics is an interdisciplinary branch of engineering and science that includes mechanical engineering, electrical engineering, 
Does the car use sensors or camera's to see where its going?
It uses a digital single-lens reflex camera which  is a digital camera that combines the optics and the mechanisms of a single-lens reflex camera with a digital imaging sensor, 
Wow, how does it know where it is? does it use gps?
By a GPS navigation device, GPS receiver, or simply GPS is a device that is capable of receiving information from GPS satellites