The tone of the article is a little contradictory. It quotes someone as saying we haven't seen a situation like this in history. It also says prices could be in the single digits for the first time since the '97-'99 price war. Which doesn't seem that long ago to me. I remember filling up for less than a dollar a gallon around then, for the first and only time in my life. It's not that cheap yet, is it?
I remember in that time frame visiting family in Montana and wondering how they could afford to drive since gas was like $1.30 / gallon there. (I was also like ten at the time and didn't really understand grown up amounts of money)
It's been dropping like a rock for the last week in a lot of places. A friend of mine in the midwest says the price at the station near his house just hit $1.49.
I've never been to California. The fill-up around '99 was in fact in Arizona, although I haven't been there in a long time. Also the only time I filled a nearly empty tank for under $10, as my car got almost 40 mpg and the usable capacity was probably under 10 gallons.