We loved staying in the van for our visit to Maui! It was really easy to find places to stay overnight (w/o paying for campsites) which we were worried about before hand. We 100% did NOT feel comfortable doing the road to Hana in the van, but frankly for our 4 day trip we had plenty else to fill our time and don't regret missing it. I would advise that other reviews I read saying it was "easy to find public showers" misled me a bit -- the public showers are shower-stations outside of public bathrooms for people to rinse off, not in enclosed stalls or anything. We shampoo-ed using these showers once and used soap to scrub off while in a bathing suit (which really was not sufficient to get sand off, Maui sand is sticky! plus probably not great for the environment), otherwise went w/o showers. Not a big deal but good to know before hand! Top recommendations are Lower Paia and Big Beach, don't miss em!