Odograph has a good blog entry based on an article about a "rebellion" of drivers who are switching from premium to regular gasoline!
I didn't realize anyone still bought premium? Well, not unless you're a car nut! I bought this Neon a few years ago and the owner left the next buyer of the vehicle a note specifying to use only synthetic motor oil and premium gas which would make it run better and where you would get better performance. Needless to say, I'm not that technical. I went ahead and did what he said. I no longer have the car (it was totaled by my daughter) but if I did, I'd surely be questioning the use of the premium gasoline at this point in time!