Gas prices scale record $4.10 a gallon

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America's Money: Gas crunch hits home

The record-high price of gasoline is putting a strain on motorists - and spurring some to shift their habits. Here are their stories.

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LONDON (CNNMoney.com) -- The high cost of gas is one thing Americans won't be celebrating on July 4.

Retail gas prices in the U.S. rose overnight to a record high for the fifth straight day, a daily survey by auto club AAA showed Friday.

The national average price for a gallon of regular gas rose to an all-time high of $4.101, up from $4.098 the previous day.

Gas prices have surged 39% in the last year and are up about 3% in the last month.

Alaska has the highest gas prices in the nation. Drivers in the state pay an average of $4.623 a gallon for regular gas.

The state with the lowest gas prices is Oklahoma, where a gallon of gas costs $3.901 on average.

The national average price for diesel fuel ticked higher to $4.769 a gallon, up from $4.767 the day before.

Record high gas prices have pinched consumers and forced many Americans to cut back on the amount of driving they do.

Thirty-one percent of Americans have canceled or shortened their planned holiday weekend vacation because of rising gas prices, according to a CNN/Opinion Research poll released Wednesday.