A cyclist was spotted holding the back of a trailer to hitch a ride on a motorway near Cairns, Queensland, on May 29.
Angela Scott filmed a video that shows a man on a bike using his right hand to grab onto the back of a fast-moving trailer.
Scott told Storyful that the man hung onto the vehicle for approximately three kilomerers.
"Crazy dude!", Scott wrote on her Facebook page.
Police condemned the dangerous stunt and said "it put other motorists at risk", according to a local media report.