HOLDEN has answered the Ford LPG challenge with a new dedicated LPG six-cylinder car of its own at the same $2500 premium over petrol, and then raised the heat a degree or two by offering the fuel-efficient and clean powertrain alternative on a broad range of products – including Sportwagon and Caprice. The Holden product also is claimed to be more fuel-efficient than the Falcon EcoLPI, but the question is: can the Holden version match the rather startling performance of Ford’s liquid-injected LPG system?