Maui could be went easily through buses.There a lot of lines around the isle (except the road to Hana and to the summit) and the bus service runs almost the Whole day. We used also to reach the Kahulului airport, since there is a bus stop just in front of the arrival gate.
ON the web site https://www.mauibus.org/ is it possible to download also the real time app to check the bus arrival. On the buses is it possible also to carry bikes in the front rack, an action easy for all the customer,young and old.
Travelling by bus in Maui, Hawaii 2018