The Big Island of Hawaii is BIG,most people can"t believe it takes about 9 hours to drive all the way around it if you don"t stop for anything more than gas.
Trust me you are going to want to stop, A LOT!
We are a big ,beautiful,and diverse tropical island with 11 of the 13 sub-climate zones in the world in one place.
From the top of Mauna Kea,Waipio Valley,Volcano National Park,and Green Sand Beach to name just a few,you will want to explore them all.
A taxi or Uber are both just cost prohibitive to venture to all the beauty hidden in every corner of the island.
Do yourself a favor and rent a Jeep and put the top down to feel that warm tropical air,You know you want to.