{video} Gasoline prices have spiked in California, soaring well above what most Americans are paying at the pump. In some locations, Californians are paying $5 for a gallon of gas. A number of refinery outages tightened gas supply in the market. The average price of regular gas in California rose to $4.18 a gallon, the highest level since May 13, 2014, according to the Oil Price Information Service, which gathers data for the AAA. California's gas prices are the most expensive in the United States: The national average is currently $2.65 a gallon. Most motorists around the country are noticing gas prices declining or ... (full story)