What do you think are the chances of Orocobre buying up the rest...

What do you think are the chances of Orocobre buying up the rest of Advantage lithium shares and what are the chances of Toyota or Panasonic making a takeover bid for Orocobre. Also why doesn't Orocobre repurchase its own shares. They are cheap and Orocobre has more cash + cashflow than they need for their own business. I don't get why they do nothing, when they could massive sharehholder value immediately. Any thought on this?!