Subarus have sported standard AWD since the 80s, well before most other automakers even bothered with the technology. That, partnered with its boxer engine, goes together like peanut butter and jelly. But the Japanese automaker has to begin worrying about fuel efficiency and emissions, so the two features that have defined the brand for decades may become optional on future models. Thankfully, it's got Toyota to pilfer from, so the implementation of new drivetrains will be a bit easier if and when it makes the shift. Subaru of Australia Director Nick Senior broke the news of the possible switch, but he also emphasized that any changes wouldn't be made before 2010 and that no product plans are without AWD or the boxer engine in the foreseeable future.