The Hawaiian island of Maui is on the verge of becoming the first area in the nation to average a price of $4 for a gallon of regular unleaded gasoline.

The average price in Wailuku reached $3.943 on Friday, the highest price in AAA’s Daily Fuel Gauge Report. At several stations, it was a penny shy of $4. In the remote coastal town of Hana, it was around $4.40 a gallon.

As the price of oil climbs above $110 a barrel, many Americans are dreading the day they might have to pay $4. But on Maui and a few stations of California, that day has arrived.

Hawaii is the most oil-dependent state in the nation, with more than 90 percent of its energy coming from imported oil. The state’s economy is extremely sensitive to oil prices globally because it depends on airplanes and ships to bring in tourists and all of its goods.