
We've seen some scary clips of cyclists reaching huge speeds tucked in behind trucks, but this is a first for us; a whole group drafting.
The incident in the clip below appears to have occurred in southern Brazil; between the cities of Arapongas and Apucarana in the state of Paraná.
It has been shared by a cyclist there who posted it to encourage others not to engage in this kind of riding.
While the cyclists are on a dual carriageway, eight of them are right behind the truck as cars overtake and the incident is filmed from inside a following vehicle.
Other riders are caught by the truck, suggesting the cyclists behind the vehicle may have been dropped by a larger group ahead.
"This was on BR 369 on the stretch between the cities of Arapongas and Apucarana," said the cyclist who posted the video.
He then added in a message to other cyclists: "If we want to be respected, we have to respect, no?"
In another clip from Brazil a few years ago, two riders reached over 120km per hour drafting on a truck. One of them put his camera on the back of the vehicle to record themselves.