VIDEO: BUS DRIVER IN KOREA FALLS ASLEEP PLOUGHS AND CAUSES A HUGE 6 VEHICLE ACCIDENT, WITH REVERSE CAMERA CATCHING IT ALL!

This is the horrific moment four people were killed when a bus driver accused of being asleep at the wheel piled into four cars backed up on a motorway. Footage of the crash in Yeongdong, South Korea, shows vehicles being shunted aside when the out-of-control bus careens into them.