Here is another robot car kit for Raspberry Pi that introduces you to DIY electronics and coding. The SunFounder PiCar-X kit comes with various modules and functions, including face/object/color detection and automatic line tracking. It can be programmed with Blockly and Python.
The PiCar-X AI has a speaker for the text-to-speech function. It uses a SunFounder robot HAT as its driving module. Users can monitor everything in real-time on their smartphone. PiCar-X has an ultrasonic sensor to avoid obstacles.