which car company is the world largest manuf?

Here an Extra from today ann:

"The Company has also sold a BlueGen to the local head office of one of the world?s largest manufacturers and distributors of motor vehicles and power products. The Company is in
discussions to secure further Australian orders and will make further announcements in due course."

COme on guys, lets START SPECULATING HERE... who could that be? Great wall of china lol, Toyota? this is the world largest we talking about...

Come on HC here your chance to speculate...