Telling my age here I remember when gas was 50 cents a gallon over in Hawaii and we thought it was high compared to the mainland (3o cents) That was in the early 70's and gas was being rationed, On the island you could only get a rental car with 1/2 tank, you had to bring it back 1/2 full and the gas stations closed at noon. Needless to say we didn't get to do too much sightseeing in the car. We laughed when we saw Interstate (get it) 1 on Oahu.