Road to Hana
The main reason for me to suggest not to drive yourself is: you will not enjoy as much. The road to Hana becomes very narrow and hard to drive. You will be driving to the rain forest. I am very glad I listened to my friends and booked the tour online. It was raining and I would have just probably turned around afraid of driving on the slippery narrow road.
The tour is an all day thing. So be prepared and take everything you might need, including extra batteries for your camera. There are so many great things to see.
Since the road is on the rain forest, there are lots of waterfalls, beautiful trees and plants and of course beaches as well. You will be taking many pictures and having a guided tour will help you learn about the different plants in the area.
Because of the narrow road, the tours are in minivans, which mean it is only a few people there. That makes it easy to stop in different places. Take snacks and drinks with yo. Our tour included a lunch and drinks with the lunch, but the rest of the 8 hours you have to either buy or eat what you have.
I found a great website to find tours and also information about Maui. The rates are cheaper than other sites. ( Let me clarify here I am not being compensated I am just letting you know about the website I used and found to be cheaper after several hours of research.)
Now, seat and enjoy your tour. You will be seeing amazing places like the O’heo Gulch Pools (a.k.a Seven Sacred Pools), the grave site of Charles Lindbergh and the black sand beach at Waianapanapa State Park among other beautiful places.