Suitors still vying for Caltex Canadian convenience store operator Alimentation Couche-Tard still wants to take over refiner and marketer Caltex Australia despite global market turmoil and the collapse of the company’s shares, chief executive Brian Hannasch said. Hannasch raised the possibility, however, that the price of its offer would drop following due diligence, given the share rout. The $35.25 a share offer is now more than 75 per cent above Caltex’s market price, the Australian Financ