Montana just had a brain cell light up and recently passed a road kill bill. You can legally possess a road killed deer, if you call it in, or email it in, and they will issue you a permit, or if a law enforcement officer, is available at the scene they can issue you a permit on the spot. However, you must remove "all" of the carcass, including guts and so forth. You cannot use it for animal food, (which is ridiculous) I guess only part of the brain cell lit up, nor can you share it. It is for your personal use only! Right.
Wayne