(RALEIGH) -- Enjoy the lower gas prices while you can. Tom Crosby of AAA Carolinas says an expiring ethanol credit is going to cause gas prices to jump up starting on Sunday.

"We're going to get a double whammy on January the first in North Carolina. One, we're going to see the state gas tax go up 3.9 cents a gallon, and anyone that buys fuel with an E-10 is going to go up about 4 cents a gallon. So total, that's about 8 cents a gallon for someone using E-10 and driving in North Carolina," Crosby said.

House Republicans attempted to cap the gas tax at its current level of 35 cents a gallon during a brief session last month, but the state Senate adjourned before taking up the measure.

The North Carolina gas tax is one of the highest in the country.