investigate the rock, which is a great design feature. all right. i'm examining lunar rocks. it's like a glass—bottom boat. progress across the terrain will be slow and steady, because this will be a really harsh environment. and moondust is pretty rough. yeah, it's really sharp. those are things that we definitely know from apollo. think of taking a glass and just slamming it down and then crushing it with your feet, and those shards are kind of how it is on the moon since there's no erosion or wind to tumble those little pieces. and that's one of the reasons we're pushing to have suit ports with the spacesuits on the outside of the vehicle. so at the end of these beds back here, there's a door to the vehicle.