A motorcyclist performs the superman stunt on a highway in Kuala Lumpur, Malaysia, September 14, 2014. Crowds of small motorbikes ridden by racers – or “Mat Rempit”, as they are known in Malaysian slang – face off in impromptu races in the Malaysian capital after dark. The decades-old culture is widely frowned upon by largely conservative Malaysians, who fear its potential to encourage gambling, drug abuse, snatch thefts and sexual promiscuity. (Photo by Olivia Harris/Reuters)





Motorcyclists gather at a petrol station on a highway where motorbike racing is taking place in Kuala Lumpur, Malaysia, Apri 19, 2015. (Photo by Olivia Harris/Reuters)





A motorcyclist performs a stunt on a highway in Kuala Lumpur, Malaysia, September 14, 2014. (Photo by Olivia Harris/Reuters)





A motorcyclist chats to young women gathered to watch the motorbike racing on a highway in Kuala Lumpur, Malaysia, July 26, 2015. (Photo by Olivia Harris/Reuters)





Motorcyclists gather on a highway where motorbike racing is taking place in Kuala Lumpur, Malaysia, March 15, 2015. (Photo by Olivia Harris/Reuters)





A motorcyclist looks into the camera on a highway in Kuala Lumpur, Malaysia, March 15, 2015. (Photo by Olivia Harris/Reuters)





Men load their motorbikes onto a truck after they were confiscated by police on a highway in Kuala Lumpur, Malaysia, September 14, 2014. (Photo by Olivia Harris/Reuters)





Spectators chat while they wait for the motorbike racing on a highway in Kuala Lumpur, Malaysia, July 26, 2015. (Photo by Olivia Harris/Reuters)





Spectators watch motorbike racing on a highway in Kuala Lumpur, Malaysia, April 19, 2015. (Photo by Olivia Harris/Reuters)





A motorcyclist performs a wheelie on a highway in Kuala Lumpur, Malaysia, October 17, 2015. (Photo by Olivia Harris/Reuters)





Motorcyclists react after their motorbikes were confiscated by police on a highway in Kuala Lumpur, Malaysia, September 14, 2014. (Photo by Olivia Harris/Reuters)





A motorcyclist talks on her phone as she watches racing on a highway in Kuala Lumpur, Malaysia, September 7, 2014. (Photo by Olivia Harris/Reuters)





A motorcyclist revs his engine to indicate that he wants to race, on a highway in Kuala Lumpur, Malaysia, March 15, 2015. (Photo by Olivia Harris/Reuters)





A motorcyclist performs the superman stunt on a highway in Kuala Lumpur, Malaysia, July 26 2015. (Photo by Olivia Harris/Reuters)