“They have spoken with their drivers, who were unaware of this incident at the time but were informed by a member of the public after it had happened yesterday.
“I have asked the contractor to remind their staff about remaining vigilant, particularly when driving through urban areas, and to report any suspicious activity to police immediately.”
Police said they had not received any reports of the incident when approached for comment by the Herald.
Commenters on the video shared their disbelief at the man’s daring gambit.
“Wait till he hits the motorway”, one person wrote. “Better hold on tight.”
“That’s a risky ride your lucky you didn’t end up inside it”, another said.
Others were shocked the driver had failed to notice his unexpected cargo.
“Shows how often the driver uses his mirrors”, someone wrote.
Another asked, “no one honks or flashes their lights to alert the driver?”