The situation I described above, with government mandating mileage increases and manufacturers "complying" with turbos reminds me of the old joke:
Charlie and Jack are two old farmers, whose back fences have abutted for generations. One day, they meet at the fence.
Charlie says: Well, Jack, how's it going?
Jack replies: Not too bad, Charlie. The government pays me to only plant half my land, but the boys from the university come down and show me how to double my yield!