Document: List of roller coaster rankings.pdf
Question: How fast was the worlds fastest roller coaster  and how long did it hold that title before being over taken in 2003?
Answer: Reaching top speeds of 180 kilometres per hour (112 mph) Dodonpa retained the title of world's fastest roller coaster for nearly a year and a half before Cedar Point's Top Thrill Dragster took it in May 2003.