The OtterBox literature advertises it as being a case that could be stood on without causing any damage and is waterproof. Standing on the edges of the OtterBox case there were no signs of stress, while standing in the center of the case it had only pushed inward slightly. Four times we had also dropped the OtterBox from a height of about one meter and the notebook was left undamaged. As it's the middle of the winter here in the Midwest, we were unable to throw this notebook case into any pool (like we do with flash drives). However, we had placed the OtterBox 7030 with the Lenovo ThinkPad R52 into a bathtub filled with water. Sure enough, the notebook didn't get wet and the case did float.
Brainstorming ways to take advantage of the sub-zero temperatures and snow while testing the OtterBox 7030, we decided to turn this notebook (with the notebook inside) into a sled. This would be able to test how well the notebook withstood any vibrations when going down the hill in sub-zero weather, the weight of about 80 kilograms on top of the case, and see how well the exterior of the case would handle any scratches or other damage.
Surprisingly, when placing the OtterBox case upside down in the snow it had functioned as an impromptu sled. It wasn't the fastest experience, as the snow was too fresh, but on ice would have been much faster. We had taken the OtterBox sled down the hill six times and had then even kicked it down the hill. For your viewing pleasure, below is a YouTube video from some of our winter testing with the OtterBox and the Lenovo ThinkPad R52 was contained inside the entire time.