Michigan motorists are paying more at the pump.
Triple-A Michigan says the statewide average for a gallon of regular gasoline is a little more than $2. That's up nearly two and a half cents from a week ago and 27 and a half cents higher than the start of 2005.
A spokesman for triple-A Michigan says high prices may stick around through the high-travel period that kicks off Memorial Day weekend.
A number of factors are contributing to the high gas prices.
Oil companies are switching to their reformulated summer gasoline supplies. That could cause some delivery delays.
The increasing cost of crude oil is another factor. It has gone up to nearly $54 per barrel in the past two weeks.