Copyright issues are such a big can of worms, and still being sorted out in the courts, including the Supreme Court.
Brad if you really want to see the dark side of this, make a plaque with Harley Davidson graphics on it and then post photos all over social media, just kidding, but you get my point.
Jeep on the other hand may feel that this adds to their advertising and so they don't mind.
I attend local craft fairs to check out my local competition ( don't really have any ). I see lots of copyrighted items for sale, IMHO there will come a day of reckoning for many of these folks ( and they will drag the rest of us, mostly honest, down with them ).
I try to be very careful of where my patterns come from. On my computer are folders labeled "friends and family only" so I don't cross the line. The magazine inserts that I have all have disclaimers on them about how many copies are allowed. Certain pattern makers state " ten items per pattern and when you make more than 20 of an item a commercial license is required" (Sue Mey) others state "no commercial use, cannot make an item and sell it" (Fiona Kingdon) and then there's Steve Good, God bless him.