Gasoline prices could soon hit $4 a gallon, a threshold they haven't flirted with since last spring.
The average price paid by U.S. drivers for a gallon of regular now stands at $3.52, according to the U.S. Energy Information Administration, which released its latest figures this afternoon. That price represents an increase of 0.04 percent from a week ago and 0.38 percent from a year ago.
Experts expect prices to spike another 60 cents or more, with the $4 mark being touched—or exceeded—sometime this summer, probably by Memorial Day weekend, the peak of the summer driving season. The last time the U.S. saw $4 gasoline was back in the summer of 2008.