The 2011 Toyota Sequoia platinum edition (listing says limited) is based on the mammoth Toyota Tundra pickup. Built for hauling a full load of people and addressing heavy trailer-towing needs 5.7-liter's much greater torque output makes sense for what this truck's intended: towing. When properly equipped, tow ratings range up to 7,400 pounds. And the Sequoia handles like a smaller truck.
I am listing my Sequoia since I travel often for work and figure it may be a benefit to others as well.