There's a story on the Statesman website saying that they're "looking into adding more rural and express routes" to accommodate demand.
But - not in Boise. In Pocatello (population 51,466). And a run between Montpelier (population 2498) and Bear Lake.
It's reasonable to assume there would be a similar increase in demand in the Boise metro area. In fact, ridership on the Caldwell-Boise bus is up 40 percent, mostly as a result of spiraling fuel prices. But there's no funding for more routes in this area, and the "visionaries" (/sarcasm) in the Idaho Legislature - at least last year's model - were unwilling to provide more latitude.
It would be interesting to know how they fund their transit in Pocatello. I'm confident it's not 100% funded by the ridership; public transit doesn't work that way anywhere, far as I know.
Maybe $4 gas has even the people in Kuna and Eagle and Meridian and Star weighing their transportation options, and coming to a realization that there aren't many. And maybe they'll ask their elected "representatives" for some leadership in the next session. One can only hope.