Nawaf-Rayhan585/YOLOv8_Projects — reverse-engineered prompt

Build me a simple Python project with YOLOv8 for object detection. I want one script that detects humans and another that detects cars, since I mostly just need those two use cases. It should be easy for a beginner to run and test, and it should work on an image or video file, and webcam support would be great too if it is easy to add.

When it runs, show the results visually with boxes, labels, and confidence scores so I can clearly see what was found. If possible, also save the processed output instead of only showing it live on screen. Please keep the code straightforward and not overcomplicated.

Also add a short README with simple setup and run instructions, including how to start the human detector and the car detector, what files or model weights are needed, and where the output gets saved. Look up current YOLOv8 docs online if you need to, and make the whole thing feel like a small clean demo project.