Read #10 in this story. http://www.huffingtonpost.com/2014/0...usaolp00000592
10. RVs and Mobile Homes
While there's no actual ban on RVs or mobile homes, you'd be hard pressed to find either in Hawaii. This is largely due to the exorbitant cost of shipping such large vehicles over from the mainland. Think about it: anything that isn't produced or manufactured in Hawaii, has to be shipped over, making many costs skyrocket
Moreover, if you decide you just can't part with your RV, you'll soon realize there are limited highway miles on each of the islands, thus kind of defeating the point. Just another reminder that, in Hawaii, there's no real need to rush from place to place -- the point is to appreciate the view you already have.