Excellent work! the graphics are indeed impressive but what's amazed me the most is the maturity of the real time editing functions. The level of integration of the physics and the various customized modules (how cool is the caterpillar track thing?) blew my mind, it represents some good design with focus on easing asset creation. This is great stuff, with such tools you can do more, quicker.. really handy if you're working alone or in a small team and want to go that one step further in terms of scope.