Almost 6 years ago, in September 2004, I was intrigued by the Toyota Prius and put myself on one of the waiting lists for a car. Somewhat unexpectedly they actually had a car for me by April 2005. It was a delight from the moment I first test-drove it, and the only car I've liked more in the time since has been a 2010 Prius I was a passenger in earlier this year. It wasn't just the fancy hybrid electric drive, nor being able to ride in the expressway HOV lane any time I want, joyful as those things might be. Somehow the car expresses a compact perfection that's hard to put into words. The interior is spacious, the seats comfortable, the controls (dashboard and all over the steering wheel) easy to reach and intuitive. The digital speedometer and other urgent indicators above the main dashboard give a different feel from other cars I've been in, one that emphasizes what's important, and lets you ignore the irrelevant. The keyless entry and push-button ignition (thanks to an RFID key that never leaves my pocket) spoil me for other cars I have to drive on occasion.
But the meat of the car is the hybrid engine and fuel efficiency. So how does that do? The dashboard monitor tells me how I'm doing, usually somewhere between 40 and 50 miles per gallon. But I wanted to keep better track, so after my first year I decided to start recording my gas purchases; the following graph shows the record: