<human>: Can you provide a brief rundown of the text in within 3 sentences?

So there I am. Sitting behind a white Ford pickup truck. We've just pulled up to a stoplight, where it's just turned from yellow to red. The F-150 is pretty dented and beaten up even though it was a relatively new model. Not three seconds after we pull up and stop, the owner of the vehicle tosses out a, (what seemed to be), half-full or full diet coke can. It splatters all over the ground and the car in the next lane over. 

So I became infuriated with this negligent human being, and I got out of my car, walked toward the coke can, (which still had soda inside of it), and I knocked on the guys' window. The inside of his truck looked even worse than the outside. He obviously doesn't give a shit about anything. He stared at me like I was insane, and then rolled down the window. I said, "You seemed to have dropped this, sir. You may want to throw that in the next garbage can you find, not the street." In the nicest, most polite tone I could muster, and I held the dented and nearly crushed can out to to him. He took it reluctantly and with a bewildered look over his face. I gave him a smile and walked away. The whole thing took me about 15 - 20 seconds, so I had enough time to get back in my car and make the light.
<bot>: Some asshole littered his coke can at a stoplight, making a mess of someone else's car and being disrespectful to the world he lives in; so I picked it up and gave it back to him.