Here is another Raspberry Pi robot designed to introduce you to electronics, machine vision, and AI. The AlienBot comes with color recognition and line tracking. It also features open source Python code. It has a 480p PTZ camera and runs for 60 minutes on battery.
This kit ships with a Pi 3B+, HD camera, extension board, joystick, and all the necessary parts. The above GIF gives you a better idea what you can do with it.