Two men escape unharmed after massive oxygen cylinder blast in their vehicle

Two men miraculously survived when an oxygen cylinder they were transporting in eastern India exploded dramatically in the back of their vehicle. 

Security camera footage, captured in Mandapeta in Andhra Pradesh, shows a huge cloud of oxygen exploding from the Tata Ace and engulfing the truck. 

The driver stops and both he and the passenger walk away unharmed. 

Two men on motorcycles were knocked over by the blast, with one reported to be seriously injured. 

See what happens in the video above.