Back when the fuel logs worked, I had a different job and car. With a low-key byways commute, it was much less difficult to hypermile in the Scion iQ during that period. My current commute is all freeway driving, so my fuel economy suffers. My iQ is dead due to rear-ending another vehicle... so I did some research. When I bought the iQ, it was the most fuel-efficient non-hybrid car. Now I have the current most fuel-efficient non-hybrid car: a Mitsubishi Mirage. I went from a 1.3L 4-cylendar engine with ~ 94HP to a 1.2L 3-cylendar engine with 78HP. Luckily, the Mirage's transmission makes it better on the freeway than the iQ.