Gas prices have surged past $4 per gallon for the first time in more than three years on Tuesday, according to data from GasBuddy, as the war in Iran continues to disrupt global oil supplies. As of 3.30 a.m. ET on Tuesday, the U.S. national average price of regular gasoline was $4.015 per gallon, up more than one dollar from a month earlier ($2.972) , and 90 cents from last year's average ($3.114). In California, drivers are paying the highest prices across the nation at $5.870 per gallon of