Guided Missile Transport (GMT) - Space Engineers HD
This creative mode toy is basically an ICBM mounted on a truck. The explosion is created by stuffing thousands of explosive components into a cargo container and then detonating a warhead next to it. Sometimes the game physics do not comprehend the size of the explosion and the buildings remain floating in mid air, which is what happened to one of them in the video. I had to reload and knock it out of the sky so it would fall into the crater for the second scene.