San Francisco is ordering up a couple of eco-friendly, futuristic boats for their fleet of ferries toting fannypack-clad tourists to and from Alcatraz prison. The two trimarans will be able to tote 600 passengers apiece and will run on a combo of solar, wind, and diesel power. The boats are setting the city back $6 and $8 million bucks each and will come sporting 45-foot high wings that are covered in solar panels. The wings will also act as sails, letting the bay breeze carry the huge boats around and letting the two diesel engines take a breather. The boats should be on the water in 2008 and 2011, so make your flight plans now to be the first to ride the fancy rigs.