Does Lexus still sell the GX? I've never really understood the difference between the two vehicles - the LX is based on the Land Cruiser, and the GX is (was?) based on the Sequoia, right? And is the Sequoia built off the Tundra platform? Does the Land Cruiser/LX have its own unique platform? The LX is more expensive than the GX, but isn't the powertrain the same for both (5.7L with 6-speed)? So where are the significant differences? Size? Content? Off-road ability?