The revelation that Volkswagen has been cheating its on its EPA testing; in reality spewing out many times more harmful pollution than advertised, is quite shocking to me. A couple of notes: I was curious exactly how VW engineers got the cars to recognize they were in "testing" mode - actually pretty simple. The cars traction control systems were set up to recognize when they were on a dynamometer - with the vehicles front wheels spinning away, while the rear ones remained motionless. This apparently triggered a routine in the electronic engine control module that resulted in much lower emissions - but would have a real-world effect of sluggish performance and poor fuel economy. Its been an open-secret in the PC chipmaking business that companies like Invidia and AMD similarly "game" common benchmarking tests. I'm just surprised that VW thought it could get away with something like this in the automobile field, which is obviously much more tightly regulated. Also - diesel vehicles are much more popular in Europe for a variety of reasons I've never completely understood. I'm also curious to know how the recall of all those VWs is going to play out. Customers who have their cars recalled might get better emissions results - but they are likely to find their cars suddenly get worse mileage and very much slower acceleration. Somehow I can understand how many owners might elect not to take VW up on their recall offer.