When I bought my first diesel back in '81, it was for the simplicity of the diesel over the gas engines with all of their pollution controls. It looks like now the diesels are even more complicated than their gasoline powered relatives. Although very reliable and far superior to the PSD, the Cummins isn't too far behind as far as complicated goes. It's not that I can't grasp it and understand how it all works. The great thing about solid state controls is the ease of diagnostics with the right tools. The scarey part is the amount of things that can go wrong out in the middle of no-where. The very thing that makes diesels more socially acceptable might be what pushes them back out of the game.