Limited Car Sharing exists on O'ahu:http://www.wecar.com/content/car-sharing/en_US/join-wecar.htmlAlso, a non-membership alternative targeted for visitors, but available for kama'aina:https://www.greencarhawaii.com/Fleet includes electric, hybrid, and gas-powered vehicles. Only draw back is...

http://www.bikeleague.org/programs/bikemonth/Additional attention is given to:May 9 - Bike to School DayMay 14-18 - Bike to Work WeekMay 18 - Bike to Work DayAlso, Honolulu Critical Mass ride, every last Friday of the month. Meet at the mauka side of the State Capitol Building.