It's tempting to try something like this on the Ram.
It's gotta be real annoying not being able to see out the back of the truck though. How bad would it be to remove the tailgate? With as 'high' as my truck is, it'd give me a pretty good view that way!
Currently if I am gently cruising at about 60 I can get 17 out of her out on the highway.
Of course, I bought my 200SX, so the truck is now a foul weather / off road toy.