Firefighters responded to a truck fore on Princes Highway in Berwick on Monday evening, 4 February.
CFA trucks from Pakenham, Hallam, Officer and Narre Warren were called to the blaze, which occurred about 6pm between Soldiers Road and Clyde Road.
A CFA media spokesperson said no one was injured and the fire was brought under control by 6.25 pm.
Witness Jennifer Hepburn said she was driving home on Kangan Drive when she saw the truck “well alight.”
“The smoke was pretty dark and there was a lot of it,” she said.
“I thought it was a grass fire to start with. There wasn’t anyone stopped on the freeway that I could see.”
Ms Hepburn called triple zero. “Of course after a few minutes there were quite a few people jumping out taking pictures.”
“There were lots of little explosions too. I’m not sure how it started or anything.”
