The Robotics program provides an introduction to various aspects of robotics including perception, localization, path planning, and control, as well as the Robot Operating System (ROS).
The Self-Driving Car Engineer Nanodegree program is a specialized robotics program; it uses robotics concepts and applies them to a self-driving car.
The Flying Car Nanodegree program is a specialized program for aerial vehicles. The focus will be on developing the skills to build an autonomous aircraft system. This means a unique emphasis on planning and autonomy for three-dimensional mobility, involving hands-on projects in simulation, with the opportunity to port your code to real drones.
Read more about self-driving cars and flying cars here.