A portable teaching tool for high school and university physics experiments and STEAM education, which can intuitively demonstrate core concepts such as "inclined motion, energy conservation, friction, acceleration, PID self balancing", and can also serve as a basic platform for robot competitions and scientific research projects. Measure the acceleration of the car at different inclinations and verify that a=g · sin θ. Application scenarios: Mechanics and energy unit laboratory experiments. University Basic Physics/Control Engineering: Open Experimental Platform. Robot Competition: Trailing Climbing, Balance Racing Prototype. Maker Space: Secondary development (installation of cameras, LiDAR, upgrade to mini AGV).