They work on semi tractor trailers.............because
They sit close to trailer
They are same height as top of trailer
Wind can move up and over the trailer front
Your truck & 5'vr are not set up the same
Sits lower
Sits farther back
Wind will just deflect slightly but still slam into front of trailer.
Just because something is available in the aftermarket doesn't mean it is worthwhile, better or needed. Marketing........plain and simple. A means of relieving you of your $$
And they just look ridiculous :B