Nicholas Durdan made a DIY 3d printed replacement hatchback cargo cover attachment point for his 2013 Ford Focus.
He measured the original part with calipers and printed it in PLA on a MakerBot Replicator 2.
The replacement is probably much cheaper and less time is needed then going to a retailer to get a new piece. Time saving alone is probably worth the effort.
If the part was released on the internet there would be no more need to buy this part anywhere in the word if you have an access to a 3d printer. Manufacturers should really think about making their parts models available to the public.
There are many examples of small home repairs done with same approach, like this replacement washing machine gasket:
Like I said many times, if your business model depends on sale of small plastic parts, you should rethink it.
He also made a 3d printed replacement AC button: