Here is a robotic video streaming car you can use with your Raspberry Pi and program with Python or Dragit. The SunFounder Video Car has a 120-degree USB camera. You can control it from your PC or web browser running on your mobile phone or tablet.
The car is compatible with the Raspberry Pi 3, Raspberry Pi 2 and Raspberry Pi B+. You get wheels, DC gear motors, SF0180 servos, USB WiFi adapter, and everything you need to get started.