In this lesson we learn how to a self driving car is build and functions. In lesson Car-1 to Car-5 we learn step by step by adding features such as Infrared Obstacle avoidance, Ultrasonic sensor and learn how to drive this SunFounder smart car. Now we learn how to put all features together so our car just moves and avoids obstacles. This car can not only goes forward and backwards, it goes back-left and right so it can find its path. Code is explained and demonstrated on serial monitor and then demonstrated on the floor. Very cool project. Enjoy.