Economical and flexible way to explore Maui. Go at this with a sense of adventure and you’ll have a great time. The car was at it was described and there is a reason that Christine is a super host because she couldn’t have been more accommodating, communicative and supportive before and during the trip.
Something to keep in mind is that I couldn’t find a paid-for campsite anywhere (I was here during the peak tourist season) which means you are finding your own places to camp (not always easy and will change how you’ll spend your evenings).