Saving on Gas

I drive a 1997 Toyota Camry V6 that gets about 23 MPG. With gas prices ever increasing, I keep looking for ways to save. I have considered one of these neat scooters, which get around 60 MPG. But do I really want to ride it every day? And won't I miss listening to music and talking on the telephone during my commute? I have considered a bi-fuel vehicle that would also run on natural gas, such as these. PG&E has some natural gas fueling stations in the Sacramento area that are relatively inexpensive when compared with the price of gasoline. But even buying one of the bi-fuel vehicles used will cost several thousand dollars, an expense that I don't currently have driving my Camry (for which I owe nothing). It would take a long time for the fuel savings to pay off that expense. If I can't make one of those used bi-fuel vehicles pay off, there is no way to justify a new Prius. (Besides that, a Prius would require just the right bumper sticker to keep the smug at bay. I haven't found the right sticker yet). The more I think about it the more convinced I am that it is easier (and less expensive) to earn more money than to save on gasoline in any significant way. I could sell some stuff on e-bay every month, and get farther.