The Aqua Treadmill is a treadmill but in water. The Aqua Treadmill was designed to make running and cardio workouts more futuristic. The treadmill burn excess fat and strengthens your muscles. This treadmill is great for people recovering from injuries because it reduces the amount of pressure put on the body when you do a regular cardio workout. After your workout the device acts as a spa so you can relax. Another addition to this water treadmill is that it that it can be used for showers and bath’s.
https://brightside.me/creativity-design/14-cool-inventions-that-will-take-you-to-the-future-327860/
This is related to engineering because of the moving treadmill inside of the water and how the treadmill has screens and lights inside of it. The types of engineers that probably worked on this device were mechanical engineers.
https://www.youtube.com/watch?v=9qHef_w8QJs