First, the fashionistas went after top quality hackle, to use for hair decorations.
Now, I just heard this morning, there's a woman trying to market road kill fur clothing.
It's called "accidental fur" ... "All the pleasure of wearing furs, without any of the guilt."
If you use road kill furs for fly tying, or are planning to try it, don't pass a single "fresh" kill. before long, there might be "collectors" working for the fur companies, grabbing up everything they can.