Around half a year ago, we heard that Toyota was engineering a Prius that would get part of its energy from the sun; now, we're seeing an eerily similar story from Japan suggesting that the plan is still on. In a rather odd report, it's noted that the automaker is "secretly (oh, is it now?) developing a vehicle that will be powered solely by solar energy," though it's also working on a partially solar-powered whip that'll come out long before the pure solar alternative. Regrettably, details beyond that are few and far between, though the premise here is completely reasonable given the current economy and the desire for automobiles that run on anything other than petroleum. Guess we'll check back in six months for yet another elusive report on the so-called progress.