Yep. For the same reason I would think twice before buying a car powered by propane, natural gas, or some other alternative fuel. I'd like to know I'd be able to get it back home from wherever I drive it. Gasoline is ubiquitous; other fuel types, not as much yet. I'm all for fuel economy and clean cars—as long as the reason is because the car is designed to pollute less, not because it's sitting useless in the breakdown lane.
I have a diesel. I plan in advance to be filled up before I go someplace where it is not readily available. Diesel’s easy to get near interstates; in small remote towns, not so much.