1.[Tank Chassis]: Tank chassis is different from car chassis, which has the track and wheels. By this way, tank chassis can move smoothly in the complex environment, like grassland, sand, and and many little stone. If the car, will be easy to rollover. But the tank chassis has much more width wheel, so can easily pass these cases. 2.[Necessary for This Car]: Robot technology is difficult. It covers robotic mechanics structure, software, electronic hardware. So, it is necessary to learn the robot for a long time. By using this car robot frame starter kit, you will learn the assemble, controller, and code program, e.g., Arduino, Raspberry pie, Python. 3.[Metal Panel]: This smart robot car chassis kit adopts metal panel design, with 2 plastic track and 4 wheels. But the price is relatively affordable. It is very suitable for the student for the Arduino/raspberry pie/microbit learning. In the manual, we just provide the referred Arduino code with WiFi, Bluetooth control mode. One can easily DIY the RC tanks. 4.[Code Programming]: When you get this smart tank car chassis, you should learn more to let the car move. E.g., you can use Arduino electronics controller board and many sensors to make some projects, like obstacle avoidance, tracing, automatic driving, and AI RoS learning. The robot chassis kit is a good choice for the starter learning kit.