Not enough content or facts to be worth fighting scrolling a slow PDF. Realisticly, from here we are never going to see the big gains again like the 80's and 90's. My 81 Pheonix and 92 Grand Am were miles ahead of older cars. Even with the new Ecotech, my 02 Cavalier is mostly a different compromise than the Grand Am, not much progress over the Quad 4. I suspect only $2.50 for gas in 2013 is a dream.