各种汽车在屏幕上行驶的简单线条绘画动画

line drawing animation shows a row of different vehicles driving from one side of the screen to the other. The cars include a bus, fire truck, police car, tractor, and racing car, all drawn in a clean and playful sketch style. The movement is smooth and continuous, creating a lively sense of motion and variety. Minimal, childlike, and expressive, the animation feels lighthearted and dynamic while keeping a clear, simple visual language.