Auto: Diesel's increasing popularity

This article contains a pretty good sum up of the differences between gasoline and diesel engines. It would be interesting to find out whether or not the changing market for diesel engines will be strategically good for companies like Cummins (which makes diesel engines and components) and for Corning, which makes diesel engine parts. On the one hand, the market is now expanding rapidly, on the other hand many large companies are now throwing for more resources into developing their own clean diesel technologies. Its possible that some of the industry's new entrants might expand into the heavier horsepower segments.