plug-in Prius, the sort that we spent a few days with last year, back when the seasons were changing and there was only a hint of this killer winter to come? Well, too bad, because you still can't buy them. But Zipcar can, apparently, adding eight of the things to its fleet, and they're available now in Boston, San Francisco, and Portland, Oregon. Given the company has 8,000 total cars available your chances of securing one of these particular Priuses (Prii?) is slim, but if you score, know that they charge in just three hours on a 110 outlet, and half that if you're wired for 220, so no fancy-pants charging station is required for use.