A participant peeks from his costume before the start of the the annual London Pantomime Horse Race in Greenwich, Britain December 13, 2015. (Photo by Neil Hall/Reuters)
A cloud of black smoke billows out the exhaust pipe of John Robertson's diesel dragster as he runs down the track during the 2015 NHRA Kansas Nationals, Friday, May 22, 2015, at Heartland Park in Topeka, Kan. (Photo by Chris Neal/The Topeka Capital-Journal via AP Photo)
Sebastien Bourdais, of Colombia, makes a corner during practice for the IndyCar auto race Saturday, June 13, 2015, in Toronto. (Nathan Denette/The Canadian Press via AP)
Mushers and theirs dog teams during the Sedivackuv long race, Orlicke Mountains, Czech Republic on January 28, 2016. The 240 Km (150 miles) race is a multi-day event, but was canceled today, two days early, because of poor snow conditions in the region. (Photo by David Tanecek/CTK via ZUMA Press)
Pigs race around the track at the Pig Racing and Diving display at the Sydney Royal Easter Show on April 10, 2009 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)
People attend the Stranavigli Water Race held at the Naviglio Grande on July 16, 2011 in Milan, Italy. Stranavigli Water Race is an annual creative contest on the water. (Photo by Vittorio Zunino Celotto/Getty Images)
Participants sit on a cable chair as they take part in the 30th edition of the Belalp Witches Ski Race on January 14, 2012 in Belalp, Switzerland. The race is inspired by a legend dating back to the middle ages, of a witch who tormented villagers in the area until she was burnt to death. (Photo by Harold Cunningham/Getty Images)