An array of unusually designed vehicles took part in the Red Bull Soapbox Race in London on Sunday (July 14)
Seventy soapboxes powered only by the force of gravity took on the tricky course in front of 20,000 spectators at Alexandra Palace in north London.
Some of the competitors crashed into straw barriers after losing control on the ramps, but no one was seriously injured. Others demonstrated impressive skill to make it to the finish line smoothly.
Teams were scored on speed, creativity and showmanship, with Red Bull's Formula One team boss Christian Horner among the judges on a swelteringly hot day in the British capital.
"It's a fantastic event. More than seventy entries included there and more than 20,000 people that have turned up to see it so it's a great day, the sun's shining and some great soapboxes," Christian Horner said.
The event, which organizers call the world's wackiest road race, was returning to the UK for the first time in nine years.