A tractor-trailer hauling blocks of cheese erupted in flames early Thursday, turning much of its cargo into freeway fondue.

No one was hurt, but boxes containing hundreds of pounds of provolone, cheddar, American and other cheeses clogged the burned truck and littered the side of Interstate 80 north of downtown Sacramento.

"It went pretty quick," said truck driver Frank Barker, who pulled over at 3:45 a.m. when he saw smoke coming from under his truck.

Barker said he tried to put out the flames with a fire extinguisher, but the fire was too big. He gave up and rescued his dog, who was traveling with him from Salt Lake City to the San Francisco Bay area.