Roll over, boy!

I haven't seen anything like that apart from James Bond movies, but we literally bumped on it in our nearest part during our evening cycling. It's called ZOBR, which stands for Z-Orbit, and this is the best descriptions of what it does to anybody who dared to sit inside, because once it's released and is rolling downhill, it just follows the profile of the hill not paying too much attantion to whoever is strapped inside. What a scary thing! But now I know that in addition to flying ( June 11]) boys also roll over. Well done, boy!