Gas prices edge up, headed higher - survey
Lundberg says average gallon up 2 cents in the past two weeks, and it's 'guaranteed' it'll go up further.
ATLANTA (CNN) -- The cost of gasoline edged up 2 cents over the past two weeks, nearly reaching the $2 mark, according to a survey published Sunday.
The average price of a gallon of self-serve regular is $1.97, the Lundberg Survey found.
"It is practically guaranteed that gasoline prices will rise further with crude oil prices up and spring gasoline demand about to kick in," said survey publisher Trilby Lundberg.
The average price at this time last year was $3.20 -- $1.23 per gallon higher, Lundberg said.
The survey, which tallied prices Friday at thousands of gas stations nationwide, found the cheapest average in Cheyenne, Wyo., at $1.67. The highest was in Honolulu, at $2.38
Here are the average prices in some other cities: Portland, Ore., $2.05; Los Angeles; Denver, $1.78; Houston, $1.78; Detroit, $1.98; Atlanta, $1.85; Philadelphia, $1.96; Boston, $1.91.
The AAA daily survey of gas station prices was up 0.1 cent Sunday at $1.947 a gallon. That's down from $3.204 a gallon a year ago, but up from $1.91 last month. 
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