How could that happen, you ask. Well, it's the slowest roller coaster in Japan. The passengers only got concerned when workers started hitting the wheels with hammers.
http://www.newsweek.com/japans-slow...nd-stops-midride-passengers-didnt-even-860209
http://www.newsweek.com/japans-slow...nd-stops-midride-passengers-didnt-even-860209