In the latest installment of the continuing video series being published on GM's FastLane Blog, this week Bob Lutz responds to the question: "What about diesel?" Clearly Lutz isn't a huge fan of diesel going forward, at least for the North American market. In a response similar to that given by Ford's Derrick Kuzak recently, he thinks the diesel efficiency advantage will largely be erased in the next years thanks to advances like gasoline direct injection, turbocharging and the coming of HCCI and it will happen at a much lower cost. Check out his entire response in the video after the jump.

[Source: General Motors]