answer:I’ve considered this question myself. My personal conclusion: It depends on how long it takes to decompose. Meaning the 1/8 of a French fry you fish out from that crevice between the seats is okay. A chicken bone is not. Also, where you’re tossing out said trash matters too. Even half a French fry is not cool if you’re tossing it out on someone’s curbside. But if you’re driving through no man’s land, who cares? It’ll be gone before anyone comes across it. If it doesn’t impact anyone, it’s fine. If it bothers someone, it’s trash.